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Caffeine Allergy Testing

Most people use caffeine to stimulate their physical and mental performance, but for some people it can cause severe adverse reactions. You may have a caffeine allergy if you develop symptoms after ingesting the substance. In order for a reaction to be classified as an allergy, your body must produce certain chemicals called by your immune system. Some people are intolerant or have sensitivity to caffeine, which causes similar symptoms. Allergy testing can determine which condition is causing your symptoms.



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Caffeine Allergy

A genuine allergy must be caused by the production of immunoglobulin E antibodies, or IgE antibodies, created by the immune system. An allergic reaction occurs when your immune system causes cancer to a harmful substance that could pose a threat to your body. In order to defend the body, IgE antibodies are released to attack the caffeine. This chemical action triggers the production of other chemicals that help defend the body. One of the most significant chemicals is histamine, which, when released in soft tissue, causes inflammation.

Distinctive Difference

Caffeine can have negative effects that are unrelated to an allergic reaction. Ingesting too much caffeine can cause headaches, nausea and diarrhea in anyone, but these effects are unrelated to an allergic reaction. Caffeine intolerance or sensitivity is another condition that can cause symptoms that are similar to an allergy, but does not involve the immune system. Caffeine intolerance is condition that triggers an adverse reaction in the digestive system that can cause symptoms in the body. Caffeine intolerance does not cause the production of IgE antibodies and is therefore not an allergic reaction.

Testing

In order to diagnose your condition, an allergist will perform various tests to determine if your body is creating IgE antibodies when caffeine is introduced into your body. The most common tests used to diagnose an allergy are a skin-prick test and a blood test. A tiny amount of caffeine is placed under your skin to see if it causes irritation or inflammation within 15 minutes. Blood tests require a sample of your blood to be sent to the lab where it is observed under a microscope when caffeine is introduced to it. If IgE antibodies form the caffeine, you will be diagnosed with a caffeine allergy.

Caution

If you are allergic to caffeine, you are at risk of having an allergic reaction during allergy testing. You need to remain under a doctor's supervision for an hour after the testing is completed. If you develop shortness of breath, facial swelling, dizziness or the feeling of a lump in your throat during the testing, inform your doctor immediately.

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Does Caffeine Decrease Breast Milk Supply?

Because you probably kept careful track of your diet during pregnancy to avoid exposing your fetus to anything that could cause harm, you might wonder if you need to maintain the same level of vigilance while you're breastfeeding. Thankfully for fans of coffee and tea, caffeine use during breastfeeding does not appear to decrease milk supply, although drinking too much caffeine can have an impact on some babies.



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Breastfeeding

The distinguishing, unifying feature of mammals - a category of animals that includes humans - is that they all produce milk to feed their babies. Like all mammals, your breasts begin to produce milk after you give birth, and your milk is affected by the quality of your diet. Some medications and chemicals that you consume - including caffeine - can pass to your baby as you breastfeed.

Caffeine and Supply

There is a common misconception that caffeine decreases milk supply, but according to KellyMom.com - a website run by a nurse and lactation consultant - there is no evidence to support this notion. In fact, one study by Dr. A. Nehlig and colleagues in a 1994 edition of the "Journal of the American College of Nutrition" found that caffeine may even stimulate milk production.

Effects

If you choose to consume caffeine while you're breastfeeding, however, you should be aware that this is a small-scale milk, and some babies are very sensitive to caffeine. The American Academy of Pediatrics considers caffeine a substance that is compatible with breastfeeding, but cautions that in excess - more than two cups of coffee per day - caffeine can lead to poor sleep patterns in your baby. This is particularly true of younger infants.

General Guidelines

Generally speaking, it's safe for you to use caffeine in moderation while you're breastfeeding, and being a coffee drinker is not a reason to wean your baby early. The World Health Organization urges mothers to breastfeed as the sole source of infant nutrition until 6 months of age.

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The Effect of Caffeine on an Unborn Baby

Most doctors recommend limiting your caffeine intake during pregnancy. According to BabyCenter.com, there has been no determination on how much caffeine is safe during pregnancy; However, caffeine may put you at an increased risk of miscarriage. Consult your doctor about caffeine if you are pregnant.



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Identification

Caffeine is a drug that is naturally found in the beans, fruit and leaves of some plants and added to certain foods and drinks such coffees, teas, sodas and chocolate. In addition, certain medications may use it as an ingredient. According to KidsHealth.org, caffeine is defined as a drug because of its stimulating effects on the nervous system.

Uses

In addition to caffeine being added to teas, coffees and chocolates, it may also be used medicinally. It may be used as a diuretic to increase urine production or it may be used as a cardiac stimulant. When used in coffees and teas, caffeine may ward off drowsiness and restore alertness. However, excess caffeine may lead to jitters and dehydration.

Effects

When you consume caffeine during pregnancy, the caffeine passes through the placenta for absorption by the fetus. A fetus is not able to metabolize caffeine at the same rate of an adult; therefore, the caffeine may be stored in the fetal bloodstream and reach alarming levels. During pregnancy, caffeine affects your ability to absorb essential minerals such as calcium. This decrease of absorption can cause your baby to be born with weak bones. In addition, it may lead to your baby having caffeine withdrawal at birth and increased breathing rates.

Expert Insight

According to Vanderbilt University, studies have shown that an intake of more than 300 mg of caffeine each day may increase your chance for miscarriage. In addition, the University says that based on animal studies, excess levels of caffeine can cause birth defects, low birth weight and preterm delivery.

SIDS

SIDS is the sudden death of an infant younger than 1 year old that goes unexplained after autopsy. According to the American SIDS Institute, to a nonprofit health organization, a study showed that infants of mothers who consumed excessive amounts of caffeine throughout their pregnancy had a significantly increased risk of SIDS.

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Can Too Much Caffeine Cause Anger & Confusion?

Caffeine has its benefits: It reduces fatigue, stimulates your nervous system and helps you stay alert. However, consuming it in excess has drawbacks; if you drink too much caffeine, you may experience side effects like irritability, nervousness and even anger and confusion. Talk to your doctor about reducing your caffeine intake, and cut back if your is causing you more harm than good.



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Side Effects of Caffeine

Your body absorbs and distributes caffeine rapidly after you consume it, and it does not continually circulate in your bloodstream but is excreted through your urine, explains the University of Iowa Hospitals and Clinics. Caffeine provides temporary relief from drowsiness, but it also has some negative side effects. These include feelings of anxiety and restlessness, as well as irritability and anger. If these feelings get in the way of your ability to function and pay attention, you may then experience confusion as well. Too much caffeine can also cause a rapid heart rate, digestive upset and muscle tremors.

How Much Is Too Much?

A moderate dose of caffeine is defined as 200 to 300 milligrams a day, and this translates to 2 to 3 cups of coffee, according to MedlinePlus.com. For most people, this amount is unlikely to cause harm. Heavy consumption is defined as more than 500 to 600 milligrams a day, and it is this amount of intake that is most likely to cause anger, confusion and other adverse symptoms. But some people are more sensitive to caffeine and its effects than others. So even if your is within the moderate range, you should still consider cutting back if you are experiencing negative effects.

Caffeine Content and Ways to Reduce

Caffeine may be in more items than you think - coffee, caffeinated tea, chocolate, cocoa and some sodas all contain caffeine. Certain pain relievers, cold medicines and appetite suppressants may also contain caffeine. If you need to cut back on your caffeine intake, do this over the course of several days or weeks. For example, try lessening your intake of coffee by 1 cup each day, or less if you find that you are experiencing withdrawal symptoms. Reducing your intake too quickly can cause negative effects as well, which may make you feel even angrier and more confused than when you consume caffeine.

Additional Considerations

Keep in mind that certain medications, such as antibiotics, as well as herbal supplements like echinacea can increase caffeine's concentration in your blood, resulting in negative side effects like anger and confusion. Never stop taking your medications or otherwise altering your diet without first discussing these changes with your health-care provider. People with coronary heart disease or peptic ulcers may have to limit or eliminate their caffeine intake to avoid potential patients' health, according to Drugs.com.

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Caffeine's Effect on Memory, Cognition, and Alzheimer's

Does caffeine help or harm memory?

Caffeine affects brain function and researchers have been investigating whether caffeine improves memory and learning retention or hinders it.

Here are just some of the scientific studies that have investigated caffeine's influence on memory and diseases like Alzheimer's.



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Caffeine's Effect on Cognition

Studies have explored how consuming caffeine can influence a person's memory and cognition. Here are just a few.

•     One study published in the Physiology & Behavior Journal looked at caffeine's effect on the memory of word lists. The researchers found that they had caffeine, had no effect, but in females, caffeine worsened cognition slightly. Src.
•     Another study published by Nature Neuroscience found that caffeine administered post-studying students with memory consolidation.
•     The University of Arizona has not looked at whether caffeine helps during periods when they are not in their optimal periods of arousal. Basically, caffeine given to kids in the morning helped with memory, while caffeine given to kids in the afternoon (a kids optimal arousal time) had no effect.
•     A similar study found the same phenomenon in adults, but only when caffeine was administered in the afternoon, which is an adult's period of lowest level of arousal.
•     Another study published in Neuropharmacology found that moderate levels of caffeine seemed to help with some types of memory problems, but excessive caffeine had a negative effect on certain types of memory.
•     Yet another study published in the Journals of Gerontology showed that women who consumed more than the median daily amount of coffee (261 mg per day) had a reduced risk of developing dementia or memory impairment.

Caffeine, Coffee, and Alzheimer's

1. A team of scientists has studied folks with Alzheimer's and found that "the group that drank the most coffee had the best memories" ( source ).

In a later study, they applied some Alzheimer's inflicted mice with 500mg of caffeine (where do they find these poor rodents?). With 500mg of caffeine the memories of the mice were protected (how do they test that?).

The study author recommended caffeine from coffee as the best source:

•     Arendash said coffee provides the best source of concentrated caffeine because it also provides antioxidants also known to provide protection against memory loss.
•     Caffeinated soft drinks do not deliver the same benefit because they lack those antioxidants and also contain sugars , increasing the risk for hypertension or high blood pressure.
•     While chocolate also is a source of caffeine, one would have to eat 5 pounds of milk chocolate to get the same effects of drinking five cups of caffeinated coffee, Arendash noted.

2. Other research published in the Journal of Neuroinflammation has also shown evidence that caffeine helps prevent this disease.

Basically, they found that caffeine protects the blood-brain barrier, which helps prevent the brain damage responsible for Alzheimer's.

You can read more about the study at BBC News .

3. A study conducted by Alzheimer's Europe and the Institute for Scientific Information on Coffee found that 3 to 5 cups of coffee a day is the optimal amount to protect the brain from degenerative illnesses such as Alzheimer's.

The study also cited a Mediterranean Diet as another factor that lowers the risk of developing Alzheimer's.

More about this study here.

4. Researchers from the Krembil Brain Institute believe that they have isolated the compound in roasted coffee that is responsible for coffee's protective effect against Alzheimer's disease. This compound is produced when coffee beans are roasted and the darker the roast, the more compound is produced.

• New research from Barcelona, ​​Spain showed that caffeine may worsen Alzheimer's symptoms in those that already have the disease. This study was conducted using mice but may have similar applications in humans.
• Natural and Moderate Caffeine Seems Best

From the above research, we conclude that caffeine does show some benefit to memory. There is evidence that it helps prevent diseases like Alzheimer's and helps improve certain types of memory.

However, to get the most memory-boosting benefits, we recommend the following:

•     Consuming caffeine from natural sources such as coffee and tea.
•     Consuming a moderate amount of caffeine that is considered safe for your age and health profile.
•     Consuming caffeine during your non-optimal period of arousal during your work or school day.

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Prevent a Stroke By Drinking Caffeine

Drinking caffeinated coffee may reduces stroke risk in some people.

This is especially interesting since caffeine is known to raise blood pressure , which is a significant risk factor for having a stroke.

However, it is likely that the caffeine is not the chemical responsible for this, but the antioxidants naturally occurring in coffee.



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The Coffee and Stroke Risk Research

A research study out of Sweden revealed that women who consumed more than a cup of caffeinated coffee daily reduced their risk of stroke by 22 to 25 percent.

In the study, researchers followed 34,670 women (ages 49 to 83) for an average of 10.4 years. Those that drank little or no caffeinated coffee had an increased instance of stroke. Src.

This study looked at caffeine naturally found in coffee, so to say that energy drinks or other artificially caffeinated products would prevent a stroke as well, would not be accurate.

Sweden was the 6th most caffeinated country last year so it's a great place to conduct caffeine research.

Another similar study out of Spain followed 80,036 women who participated in the Nurses' Health Study and found that coffee reduced the risk of stroke among this group of women as well. Src .

These studies give some new insight into the health benefits of coffee and some evidence that women can prevent a stroke by making caffeinated coffee a big part of their healthy diet.

What about Men?

There are a few studies that have also explored coffee and caffeine's relationship to stroke risk among men.

One study looked at male smokers, their coffee, and risk of stroke. With this study, brain infarction risk was reduced but other forms of stroke were not. Src .

A study out of Honolulu looked at 499 hypertensive men over a 25 year period and if they increased their risk for stroke. This study concluded that menopause with high blood pressure increased their risk of thromboembolic stroke by consuming caffeinated coffee. Src .

A meta-analysis of prospective studies involving coffee and stroke was conducted in 2011 by Swedish researchers by looking at research conducted between 1966 and 2011. Src .

Coffee, Stroke, Caffeine Bottom Line

It seems like the research would tell us, that people with high blood pressure should keep caffeine to a minimum , but for those with normal blood pressure, caffeinated coffee may offer some protection against stroke.

People can even further reduce their risk of stroke by consuming a healthy diet loaded with colorful vegetables and fruit with very little processed food and added oils added in.

Coffee is just one way to get more antioxidants in your diet for increased health and less risk of stroke.

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The Disadvantages of Caffeine

Caffeine is a bitter substance that stimulates your central nervous system. This means it can help boost your alertness and eliminate your drowsiness, according to MedlinePlus.com. Chances are you consume some caffeine on a regular basis if you drink coffee or tea, drink soda or eat chocolate. And although caffeine is widely consumed, it is still considered a drug and it comes with some potential disadvantages.



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Side Effects

You are at a higher risk of undesirable side effects from caffeine if you have more than 500 to 600 milligrams of caffeine per day, which is contained in more than 4 cups of brewed coffee. Some immediate side effects of high caffeine are nervousness, restlessness, upset stomach, rapid heartbeat, muscle tremors and irritability, according to MedlinePlus.com. In the long term, drinking a lot of caffeine throughout the day might lead to a vicious cycle of insomnia and fatigue, wherein you consistently lose sleep because of caffeine's effects, but then you need to drink caffeine to be alert during the day.

Hypersensitivity

Your body should be able to tolerate about 200 to 300 milligrams of caffeine a day - equivalent to about 2 to 4 cups of brewed coffee - unless you are sensitive to caffeine. You might be more sensitive to caffeine if you are prone to stress, have high blood pressure, have headaches often, have an irregular heart beat and stomach ulcers or acid reflux, according to MedlinePlus.com. If you are extra-sensitive to caffeine, a single cup of coffee could prompt undesirable effects, such as restlessness.

Pregnancy Risks
You may increase your risk of fertility problems if you are a woman who has a lot of caffeine. Caffeine reduces muscle activity in your fallopian tubes, which are responsible for delivering eggs from your ovaries to your womb, according to the May 26, 2011 issue of the "British Journal of Pharmacology." Caffeine can also increase breastfeeding because it crosses the placenta and reaches the fetus. Because the fetus has an immature metabolism, caffeine may linger in its system and build up to toxic levels. You may be at a higher risk of miscarriage and delivery of a low birthweight weight if your caffeine intake exceeds 200 to 300 milligrams per day.

Addictive Properties

Caffeine dependence can occur, according to 1994 study published in The Journal of the American Medical Association. In the study, researchers determined that caffeine drinkers had an average of 357 milligrams of caffeine per day showed classic drug dependence signs and symptoms such as a higher tolerance for caffeine with frequent use, a persistent desire or unsuccessful attempt at limiting their intake, withdrawal symptoms when they cut back on their intake and choosing to continue consuming caffeine in spite of the knowledge that caffeine might cause them psychological and physical problems. Common caffeine withdrawal symptoms - headache, fatigue, irritability, trouble concentrating and depression - have been observed at persistent intakes as low as 100 milligrams per day, but they are more common with higher levels, according to the Linus Pauling Institute.

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Caffeine and its influence on personalities withdrawn

Caffeine is one of the most widely used stimulants in the world due to the ease of consumption, as it is found in various alcoholic beverages and soft drinks, as in chocolates, tea, coffee and a multitude of medicines.

While its invigorating and energizing property is well known, caffeine could also accentuate sensitive personality traits , causing greater states of shyness, anxiety or irritability. Therefore, it is appropriate to know the influence that this nutrient could have on people since they are in the womb until adulthood.



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Prenatal exposure

It is very common for pregnant women to avoid caffeine consumption during this period and for good reasons, otherwise it could be causing stress in the baby, in addition to causing long-term effects that would be reflected in a set of features such as fear, withdrawal, anxiety or shyness in the child's personality .

Although the professionals do not have certainty on this point, it is estimated that these negative effects of caffeine on the pregnant child may be due to the interference that occurs in neuronal development and the release of neurotransmitters.

Sensitivity

These sensibility traits , which could be resolved both in withdrawn attitudes, shyness or inhibition, as well as in cases of irritation and easy anger, are estimated to be found in more than 20% of people, who upon receiving certain stimuli respond with different forms of behavior. One of these stimulants is caffeine , which could trigger and settle these traits in sensitive people.

Intensity trait

Caffeine can even intensify the sensitive features of people, may cause greater states of withdrawal in naturally shy individuals as situations of anger in irritable people.

For this, according to the Spanish journal of psychology, the intake of 2 cups of coffee per day would suffice, so it is very important to identify if any of these sensitive features integrate our personality to, if so, avoid or reduce to the maximum the consumption of foods with caffeine .

Attention and reaction

Caffeine could also have "positive" effects, such as an increase in concentration and a stimulating effect for the whole organism, that's why caffeine is consumed willingly by timid or introverted people.

If several American studies are considered, the consumption of about 7 milligrams of caffeine daily is a good stimulant to improve performance without leading to major complications.

The last word will be given by a medical professional, who will recommend if the consumption of caffeine is the most recommended for your personality or mood. Anyway, a good advice is always to govern moderation.

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What Are the Dangers of Caffeine Abuse?

Many people drink caffeinated drinks as coffee, tea and energy drinks for a boost of energy to start the day or stay awake and focused throughout the day or evening. Caffeine stimulates your central nervous system, so it can make you feel more alert and energized, but excess use of caffeine can result in a variety of negative side effects.



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Caffeine Intake

Most individuals can consume 300 milligrams of caffeine per day, which is considered moderate intake, without experiencing serious side effects. Caffeine content for beverages can vary depending on the size and brand of the drink, but in general you can drink approximately three 6-ounce cups of coffee, which equal 300 milligrams of caffeine. Tea, cocoa, soda, and energy drinks may also contain caffeine, and intake of these beverages should also be limited. Non-prescription medications containing caffeine include Excedrin, 65 milligrams, Anacin, 32 milligrams and maximum strength Midol, 60 milligrams, according to the University of Michigan.

Physical Effects of Excess Caffeine

Ingesting large amounts of caffeine, 1,000 milligrams or 6 cups of coffee per day, may lead to physical side effects caused by habitual use and the stimulating effects of caffeine. Heavy use and abuse may result in restlessness, rapid heart rate, nausea, muscle tremors, insomnia, and, according to the University of Michigan, problems with conception. Lack of sleep from caffeine use can lead to ongoing sleep disturbances, fatigue, and a decline in physical performance and energy levels.

Habitual Caffeine Abuse and Mood

Caffeine abuse can be habit forming. If you abruptly stop caffeine intake, you may experience unpleasant withdrawal symptoms and mood changes. Caffeine abuse lead to psychological symptoms such as anxiety and irritability, and withdrawal from caffeine causes marked nervousness and depression leading to reduced motivation and sleeplessness.

Expert Insights

McKinley Health Center recommends, if you are consuming large amounts of caffeine and suffering from symptoms, you should gradually reduce your daily consumption by selecting beverages with a lower caffeine content and alternating coffee or teas with decaffeinated or caffeine-free options such as decaf coffee , herbal teas or water.

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How to have more energy: sources of caffeine

Does fatigue not allow you to enjoy the things you like most? Do you feel that you lack energy to complete the routine? Do you find it increasingly difficult to get up in the morning to start the day? Not to despair, there are many sources of energy and caffeine that can give you that necessary boost.

You probably did not know some of the elements that today in energy sources that you did not know .



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Caffeine consumption: what you should know

250 milligrams of caffeine a day awakens the brain, helps in concentration, relieves excess stress and can even help you live longer.

In any case, it is very important that you bear in mind that, like all things in this life, excessive consumption is always harmful. You should always control your caffeine intake and know when you should stop, otherwise you will have a counterproductive effect.

Caffeine is addictive , and if your consumption is becoming an addiction, do not hesitate to stop using it. In this case you will recognize the side effects easily, such as dehydration, problems falling asleep, anxiety, upset stomach, etc. You should not consume caffeine during pregnancy .

Decaffeinated coffee

Although it seems very obvious and you think decaffeinated coffee has no caffeine, this is a hoax. The idea of ​​a coffee with the flavor that you like so much but without the effects of caffeine sounds good. However, decaffeinated coffee still contains caffeine. Of course to a lesser extent, but it does.

Soft drinks that are not cola

The secret of cola soft drinks and their caffeine content is something we all know. On the other hand, did you know that almost all soft drinks and sodas in other flavors have caffeine? Well that's the way it is, and even in other beverages like some root beer brands, there is a high content of caffeine .

Chocolates

You already know that cocoa has many health benefits and that chocolate is made from cocoa. However, chocolates are another source of caffeine that can also help you with some extra energy. Caffeine is mostly found naturally in cocoa beans and combining it with a soft drink will keep you more awake and active.

Frozen

Who does not like ice cream? It is ideal for summer, it is soft and delicious but, in addition, it has caffeine. You can even order a chocolate ice cream to add, and even many brands of ice cream also offer coffee flavor, so you can keep adding and make an energizer even more powerful.

Weight Loss Pills

While caffeine will not help you in anything to lose weight, strangely the manufacturers of diet pills add certain caffeine content to their products. So if you are looking to lose weight and are taking pills to lose weight, keep this in mind. Whether you want a boost of energy or if you are having trouble sleeping, you can find something interesting by looking at the ingredients in the leaflet of your pills.

Medications to relieve pain and flu

Many medications to relieve pain, like a large number of flu shots or flu pills, have certain caffeine content. A little of it can alleviate the pain and remove a discomfort. However, excessive consumption of caffeine can generate your own discomfort and, for example, a headache .

Energy drinks

Energy drinks have high caffeine content and it is quite obvious. There are even some brands that are prohibited from selling in several countries for that reason. The vast majority of energy drinks are based on guarana, and if you did not know the guarana is also a fruit with a high concentration of natural caffeine , especially those grown in Brazil.

Refrescantes buccal

Mouth fresheners in aerosols and some chewing gums have a certain caffeine content. It's actually a strange thing, but some brands of chewing gum and other mouth fresheners add caffeine to their products. Maybe it's a sales strategy (remember that caffeine is addictive) but the truth is that this substance is present there, so always control the ingredients of what you consume.

Sunflower seeds

That's right, sunflower seeds are a natural source of caffeine . They are delicious, nutritious and very healthy so they can be easily used in many meals. In addition to caffeine, they contain several proteins such as taurine and lysine, as well as vitamin E and B6. What are you waiting for?

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Top 25+ Caffeine Health Benefits

Caffeine is the most widely used substance on the planet and it is also one of the most researched in regards to how it affects the human body.

We've dug through many of those scientific studies and compiled to list of the possible caffeine health benefits people may experience from using caffeine.
27 Possible Caffeine Health Benefits



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1.     In Japan, researchers have shown that caffeine increases memory . Also, a newer study out of Johns Hopkins University showed that at 200 mg caffeine pill helped boost memory consolidation.
2.     Caffeine mixed with carbs replenishes muscle glycogen concentrations faster after exercise.
3.     Caffeine detoxes the liver and cleanses the colon when taken as a caffeine enema .
4.     Caffeine helps keep you alert while driving during periods of sleep restriction. Here's the research
5.     Caffeine can stimulate hair growth on balding men and women.
6.     Caffeine relieves post-workout muscle pain by up to 48%.
7.     Caffeine relieves pain associated with sleep loss better than analgesics. The study
8.     Caffeine may protect against Parkinson's disease . Research shows that those who consume coffee at the risk of developing Parkinson's disease and it even reduces the risk of those genetically more likely to develop the condition. Here's the study .
9.     Caffeine may help ward off Alzheimer's .
10.     Caffeine increases stamina during exercise .
11.     Caffeine through coffee may protect against eyelid spasm .
12.     Caffeine may protect against Cataracts .
13.     Caffeine may prevent skin cancer. A new study out of Rutgers University found that caffeine prevented skin cancer in hairless mice. Another study showed that caffeinated coffee drinkers have less risk of developing melanoma.
14.     People who consume caffeine have a lower risk of suicide. Src .
15.     Caffeine may reduces fatty liver in those with non-alcohol related fatty liver disease. This study comes out of Duke University.
16.     Caffeine is shown to reduce liver fibrosis risk in patients with hepatitis C. As little as 100 mg per day is believed to have protective benefits. Src .
17.     Caffeine consuming men showed increased semen volume and significantly less sperm DNA fragmentation than non-caffeine consuming men. Src .
18.     Men who consume 250-375 mg of caffeine per day have a much lower risk of developing ED (erectile dysfunction). Reduced risk was even observed among men consuming as little as 85 mg of caffeine daily. This research was conducted by The University of Texas Medical School. Src .
19.     Caffeine may prevent ringing in the ears (tinnitus) in women : A study published in The American Journal of Medicine followed a group of 65,085 nurses since 1991. The women who consumed the most caffeine had the lowest incidences of tinnitus reported. Src .
20.     Caffeine Reduces Kidney Stone Risk . In a large 217,883 person study, those that consumed caffeine from any source had less kidney stone formation than those that did not consume caffeine. The authors believe that this is because caffeine makes urine more dilute. Src . Caffeine has been shown to reduce the mortality rate in those with chronic kidney disease . Caffeine appears to have a protective effect on the progression of the disease. Here's the study. Another study (2018) also confirmed that caffeine reduces the mortality rate for those living with kidney disease. Study link .
21.     Caffeine improves reaction time and logical reasoning during times when sleep is not possible or restricted. See the study here .
22.     Caffeine helps those with asthma . A study published in the US National Library of Medicine said that it seems to open airways and help asthmatics to breathe easier similarly to the drug's drug used and that it's a close cousin to caffeine. The study
23.     Reduces driver error : A recent study conducted by the Australian Department of Defense found that caffeine driver improves performance and reduces driver error. Caffeinated gum was used in the study on soldiers that had been sleep-deprived for 50 hours.
24.     Caffeine may prevent weight gain : Research out of Germany showed that weight loss study participants who drank 2-4 cups of caffeinated coffee a day were more likely to be successful at keeping the weight off than those who did not consume caffeine. The study
25.     Caffeine reduces chronic inflammation . Researchers from Stanford University found that caffeine blocks the expression of a gene responsible for low-grade chronic inflammation as we age. This inflammation eventually leads to high blood pressure, hardening of the arteries, and heart disease. Caffeine seems to help reduce this age-related inflammation in those that are regular consumers of the drug.
26.     Caffeine is good for the heart. A study out of Germany found that the amount of caffeine typically in 4 cups of coffee daily helps strengthen heart muscle cell function and prolongs the life of heart muscle cells. You can read the study's abstract here .
27.     Caffeine helps premature infants : A few doses of caffeine given to premature babies drastically improves lung function and overall survival rate. Newer research found that this therapy produces no long-term side effects as the children age. Src .

There can be negative health consequences from consuming too much caffeine , so do not go too crazy. Also, some of the benefits of caffeine have only been researched within the context of caffeinated coffee.

Here are some further health benefits when the caffeine is consumed via coffee. It is also interesting that some of these benefits did not carry over to those that decaffeinated coffee drank.

Caffeinated Coffee Health Benefits

•     Caffeinated coffee cuts mouth and throat cancer risk by 50%.
•     Coffee can reduce the risk of stroke as much as 22%.
•     Shown to reduce the risk of several types of cancer .
•     Heart rhythm disturbance hospitalizations decrease with coffee drinkers.
•     Coffee decreases the risk of type 2 diabetes .
•     People who drink at least 4 coffees or teas have lower blood pressure according to a new study out of Paris. Tea drinkers had the most blood pressure benefit, while coffee drinkers had just slightly less.
•     Research out of Greece shows that Greek boiled coffee may increase longevity and heart health.
•     Those who drink coffee after a heart attack are less likely to die from the incident. Research shows that heart attack victims who consumes more than 2 cups of coffee daily have the least risk of mortality from the heart attack.

While this list might seem like a green light for caffeine, it does come with a few caveats. In most cases, the caffeine health benefits were realized by those who consumed moderate coffee / caffeine amounts. Also in some of the studies above, the caffeine is concentrated and applied directly to the body area being researched, ie cataracts and baldness etc. Therefore, dietary caffeine would not produce the same results.

The British Medical Journal published a study that reviewed 201 studies concerning coffee and caffeine. The scientists concluded that there was no evidence of the health benefits of consuming coffee outweigh any risk involved.

We can conclude that caffeine consumed via natural sources is probably the best since many of the benefits of caffeine are probably largely due to the high antioxidant levels found in regular coffee and tea.