I’m not much use behind the keyboard until I’ve had my morning cup of coffee. And I’m far from the only American who needs a little java jolt to get their day going.
If a study published in this month’s Journal of Nutrition is any indication, the caffeine in coffee might offer not just a momentary mental boost but also longer-term effects on thinking skills. Having an alcoholic drink a day might also benefit our mental performance, but the line between just right and too much is uncertain. An even better strategy for maintaining memory and thinking skills with age may be to eat a healthy diet.
In the study, researchers from the National Institute on Aging compared scores on various tests of thinking skills and memory with caffeine, alcohol, and nutrient intake in 727 men and women taking part in the Baltimore Longitudinal Study of Aging. Over all, participants who ranked high on the healthy diet scale did better on 10 tests of memory than those with lower diet scores. The same held true for those who took in more caffeine. The effects for moderate alcohol drinking were mixed.
- The caffeine-brain connection
- Drink to your cognitive health?
- Better memory through diet
- A recipe for maintaining memory
- How Coffee Can Help Keep Your Brain Healthy
- Potential Benefits
- Caffeine: A Double-Edged Sword
- How Caffeine Effects Your Brain: Truths and Myths
- Effects of Caffeine on Your Brain: Truths & Myths
- Negative Effects of Caffeine on the Brain
- Long-term Addictive Use of Caffeine: Bad for Your Brain?
- The dangerous effects of caffeine
- 9 Reasons Why (the Right Amount of) Coffee Is Good for You
- You could live longer.
- Your body may process glucose (or sugar) better.
- You’re less likely to develop heart failure.
- You are less likely to develop Parkinson’s disease.
- Your liver will thank you.
- Your DNA will be stronger.
- Your odds of getting colon cancer will go way down.
- You may decrease your risk of getting Alzheimer’s disease.
- You’re not as likely to suffer a stroke.
- 20+ Harmful Effects of Caffeine
The caffeine-brain connection
The reason you get a quick wakeup call after chugging a mug of coffee has to do with the way caffeine tricks your brain. Not only is caffeine a brain stimulant, but it also blocks receptors for a chemical called adenosine, which normally prevents the release of excitatory brain chemicals. With adenosine out of the way, these brain-sparking chemicals can flow more freely—giving you a surge of energy and potentially improving mental performance and slowing age-related mental decline.
The Journal of Nutrition study isn’t the last word on the subject of caffeine and memory. It showed that people—particularly those who were ages 70 and over—who took in more caffeine scored better on tests of mental function, but not on memory tests or other measures of mental ability.
Some previous studies have shown improved long-term memory performance and thinking ability in regular caffeine consumers; others haven’t shown any connection.
Drink to your cognitive health?
When it comes to alcohol, its effects on memory and thinking skills may depend on how they are measured and how much you’re drinking. In this study, moderate alcohol use appeared to improve working memory and attention—especially in women and in those ages 70 and over. But those benefits could come at the expense of declines in skills like executive function and global thinking.
Excessive drinking, defined as more than two drinks a day for men or more than one a day for women, is known to harm the brain. Over time, excessive drinking can cause everything from short-term memory lapses to more permanent problems. Any benefits from alcohol seen in the Journal of Nutrition study came from moderate drinking.
Better memory through diet
The study also looked at the connection between diet and mental performance. People who ate foods with plenty of healthful nutrients had better attention and memory than participant with poorer diets. A healthy diet was also linked to good thinking skills in women and participants under age 70. In particular, foods that are part of the Mediterranean diet—fruits, vegetables, nuts, fish, olive oil, and whole grains—show promise for preserving memory and preventing Alzheimer’s and other forms of dementia.
A recipe for maintaining memory
This study is just one of many linking healthy eating habits with maintaining memory and thinking skills into old age. Continuing a healthy diet, or switching to one, makes sense on many levels. It probably is good for your brain, and it’s definitely good for your heart, bones, muscles, and overall health.
As for caffeine? There’s no evidence yet that you need to start drinking coffee or tea to protect your brain. If you like drinking caffeinated beverages, enjoy them. But keep in mind that adding lots of sugar or cream, or getting caffeine via sugar-sweetened soda, may counter any benefits.
What about alcohol? If you enjoy drinking alcohol, keep it moderate—or less. As the researchers write, “alcohol has potentially deleterious effects over time with lower intake being a better choice than moderate intake.”
How Coffee Can Help Keep Your Brain Healthy
Whether steaming hot or poured over ice, Americans love their morning cup of coffee – and afternoon latte and sometimes, even an evening cappuccino. In fact, the most recent National Coffee Association USA study reveals 64 percent of Americans drink coffee daily.
But is all that caffeinated coffee good for your brains?
“For the most part it is,” says neurologist Karla Madalin, MD.
Researchers believe the benefits of caffeinated coffee may be attributed, in part, to detoxifying enzymes known as glutathione S-transferase.
A high-test coffee habit may decrease a person’s chance of developing neurological conditions as long as consumption is capped at about 400 mg daily, or the equivalent of about three cups of coffee, depending on the blend and how it’s brewed, Dr. Madalin says.
The potential benefits of high-test coffee include a lower risk of developing:
- Parkinson’s disease, except in postmenopausal women
- Alzheimer’s disease, which affects about 26 million people worldwide, according to the Institute for Scientific Information on Coffee
- Depression in women
“In seniors, it can improve cognitive performance and memory performance and decrease depression with about 280 mg – or one to two cups a day,” Dr. Madalin says.
There are also benefits of drinking coffee on the job.
“People might be more productive at work and perform better,” Dr. Madalin says. “The risk comes with higher doses, which make some people irritable, anxious and nervous. Smaller doses are better.”
Caffeine: A Double-Edged Sword
Caffeine – which is also present in some chocolates, teas and energy drinks – is considered a stimulant or psychoactive drug. Like most drugs, it can be a double-edged sword.
“It antagonizes adenosine receptors and causes the release of excitatory neurotransmitters,” Dr. Madalin says. “With smaller doses, it’s beneficial, but it’s harmful or deleterious with higher doses.”
No matter your age, Dr. Madalin offers these seven cautions about caffeine:
- Avoid or limit caffeinated coffee if you have anxiety, a history of seizures, heart issues or are jittery.
“A patient with a tremor in his hands was drinking 15 cups of coffee a day,” she says. “I told him to cut down on the coffee and he came back and said, ‘You cured me and didn’t even have to give me medication.’”
- Don’t drink more than six cups of joe a day if you are a menopausal woman who is on hormone replacement therapy. This increases the risk of developing Parkinson’s disease.
- Don’t substitute coffee for sleep. Lack of shuteye will eventually catch up to you and affect everything from job performance to mood to memory.
- Consider switching some or all of your coffee consumption to half-caff, which is a blend of regular and decaffeinated coffee. Decaf is also a good choice for decreasing the likelihood of side effects, but be aware it doesn’t provide benefits to brain health.
- Be mindful of what you mix into your java. Nondairy creamer contains trans fats, which, along with sugar, can decrease the antioxidant effect of caffeine.
- Drinking too much regular coffee can lead to caffeine dependency and abuse, so keep intake in check.
- Don’t turn to the powdered form of caffeine, which is highly concentrated and can be toxic.
Karla Madalin, MD is a neurologist at University Hospitals Bedford Medical Center. You can request an appointment with Dr. Madalin or any other doctor online.
How Caffeine Effects Your Brain: Truths and Myths
Effects of Caffeine on Your Brain: Truths & Myths
It suddenly seems as though there’s a new coffee shop on every corner, selling highly caffeinated drinks packed with sugars and fat. As a society, we are going from drinking 1-2 cups of coffee a day to 1-2 cups – three or four times a day. It’s the new comfort food, especially in cold weather.
In order to make it in today’s fast-paced world, you’ve got to stay focused with plenty of energy – both physical and mental energy. It’s easy to see why your body craves caffeine in the short term, especially if you’re sleep-deprived and feeling down.
As energy levels dip because of an overstressed lifestyle, though, have you ever wondered what all that caffeine is doing to your brain?
Many people don’t know of an alternative to caffeine.
Negative Effects of Caffeine on the Brain
Granted, caffeine can lead to temporary increased alertness, and sports medicine research does promote it as an athletic performance enhancer under certain conditions. However, excessive caffeine every day also constricts blood flow to your brain and many other organs.
A daily cup of joe is probably not a problem, but more than 3-4 cups of caffeine, which is metabolized in your hard-working liver, may raise a few issues.
Adenosine is a chemical in the brain that causes drowsiness by slowing down nerve cell activity – and it’s the key to understanding caffeine addiction. When we are tired, adenosine triggers the brain to slow down so we will go to sleep and naturally rejuvenate our own brain function.
Caffeine blocks the effects of adenosine by occupying the adenosine receptor sites and preventing the brain from seeing it. So even if you are tired and in need of sleep to revitalize brain chemistry, caffeine tricks the brain into thinking it is wide awake.
Additionally, caffeine causes the release of adrenaline from the adrenal glands, putting the body into a stressful “fight or flight” mode, whereby:
- Your pupils dilate
- Your heart beats faster
- Blood vessels on the skin constrict to slow blood flow from cuts
- Blood flow increases to working muscles
- Blood pressure rises
- Blood flow to the stomach slows
- Your liver releases sugar into the bloodstream for extra energy
- Muscles tighten up, ready for action
Caffeine also increases dopamine levels in the same way that amphetamines do. Dopamine is a brain neurotransmitter that activates the pleasure centers of the brain. While caffeine’s effects are far less than amphetamines, it is a similar process.
Long-term Addictive Use of Caffeine: Bad for Your Brain?
Excessive caffeine use is associated with chronic dehydration (which can harm your body in numerous ways), added stress on your heart, high blood pressure, jitteriness and headaches, says Daniel Amen, M.D.
Truth is, depending on your own body chemistry, when the effects of the caffeine wear off, you can actually feel fatigued and depressed. So, you consume more caffeine to re-energize. Soon enough, you are hooked on the stuff – and it takes more and more to achieve that same feeling.
After years of studying brain scans at Amen Clinics, it is clear that reduced cerebral blood flow is the opposite of what you want for optimal brain function, says Dr. Amen. “In fact, decreased cerebral blood flow lowers cognitive function and can exacerbate emotional and mental health problems.”
Formulated without caffeine, BrainMD’s Focus & Energy supplement contains select nutrients that have been clinically proven to help support heightened mental focus and sustained energy. Our exclusive formulation proves that you can sustain a dynamic, healthy energy level each day and get more done – without the caffeine!
The dangerous effects of caffeine
Many people need their morning cup o’ Joe to function, but is coffee really that safe for you? The benefits of coffee have been touted in recent research and include reducing the risks of cardiovascular disease, type 2 diabetes, and even Parkinson’s disease. But other studies have shown that coffee, and the caffeine it contains, can have some bad effects as well.
Caffeine is said to be the world’s most widely consumed psychoactive drug. According to the International Coffee Organization, roughly 1.6 billion cups of coffee are consumed each day throughout the world. In the United States, the Food and Drug Administration has reported the daily caffeine intake is roughly 300 mg/person/d, equivalent to 2-4 cups of coffee. This is considered moderate.
Some of the more deleterious effects of excessive caffeine consumption can include the following:
- According to the Mayo Clinic, consumption of more than 500-600 mg/d of caffeine can cause insomnia, nervousness, restlessness, irritability, dyspepsia, an increased heart rate, and muscle tremors.
- Caffeine may raise blood pressure, especially in hypertensives and those who do not normally consume caffeine.
- Young hypertensive adults who consume caffeine equivalent to four cups of coffee per day may be at a four-fold risk of myocardial infarction (MI), and even more moderate consumption may increase their risk of MI by three fold (Presented at ESC Congress 2015).
- Caffeine binges may increase the risk for a flare-up of gout.
- The risk of fibrocystic breast disease may be slightly increased (1.5-fold) in women who drink 31-250 mg/d. Those who drank over 500 mg/d had a 2.3-fold increase in the odds of developing cysts.
- Women who consume a lot of caffeine are 70% more likely to develop incontinence.
- Heavy caffeine intake may increase the risk of bone fractures because it interferes with ossification.
- Investigators from the Mayo Clinic found that men who drank more than four cups of coffee per day had a 21% increased risk of all-cause mortality compared with non-coffee drinkers. They also found that men and women who consumed excessive amounts of coffee were more likely to smoke and be in poor physical condition.
In light of the research, perhaps the old adage —“Everything in moderation”—would be the wisest approach to caffeine intake.
- See Also: ‘Beer is good for you’ plus more of your favorites in food and drink
The cause-and-effect relationship between caffeine and epileptic seizures has long been debated, as have the pros and cons of caffeine consumption in general.
Caffeine prevents drowsiness by blocking the action of adenosine, a drowsiness hormone, and simultaneously stimulates areas of the autonomic nervous system. Many Americans drink caffeine daily in the form of coffee, soda, and energy drinks. This includes 80% of those with epilepsy. Because caffeine stimulates brain activity, researchers have long sought to determine whether caffeine can trigger epileptic seizures.
Most of the scientific research on caffeine and epilepsy has focused on adenosine, a hormone present in all the cells in the body. Epileptic seizures trigger a surge of adenosine, which leaves people groggy. Caffeine, however, interferes with adenosine while simultaneously stimulating areas of the autonomic nervous system, making people more alert.
In other research, investigators have indicated that precipitating factors—and not caffeine—may be to blame for the seizures. Such factors include missing a dose of medication, drinking alcohol, and not getting enough sleep. It is only in the presence of one or more precipitating factors that the addition of caffeine may increase seizure risk in epileptic individuals.
An oft-cited study on the topic was conducted in 2013 by Samsonsen et al, who found no strong relationship between caffeine consumption and the risk of seizure.
- See Also: Three cups a day keeps AFib away, researchers conclude
In a more recent systematic review (2018), however, van Koert et al found that, while clinical studies on the link between seizures and caffeine were rare, there was a suggestion in preclinical studies that caffeine did increase seizure susceptibility. In some cases, however, it was protective. These researchers also found evidence that caffeine seems to lower the efficacy of several drugs, especially topiramate, in animal models. They concluded that caffeine intake should be carefully considered in patients with epilepsy who are trying to achieve and maintain control of their seizures.
But again, many variables may come into play, especially with coffee. The liver and the body’s metabolism may play a role. Even sugar and cream levels in a cup of coffee may have an effect. Larger variables can even include the geographic area in which coffee drinking occurred, the level of roast, and chemistry of the drink.
Just a couple of calories a cup, good old black coffee packs quite a punch. It wakes you up, boosts your metabolic rate and decreases the risk of some diseases.
Not that habitual coffee drinkers need convincing, but evidence of its health benefits stacks up quickly:
- It gives you energy and may help you lose weight and sharpen your mental focus, thanks to the magic of caffeine. Studies have shown that caffeine may improve your mood, help your brain work better and improve performance during exercise.
- A regular java habit is associated with a lower risk of Type 2 diabetes and Parkinson’s disease. Additionally, in one study, caffeine was linked to a lower risk of Alzheimer’s disease.
- Coffee is an excellent source of antioxidants, which may help protect cells from damage.
- Higher consumption of coffee – caffeinated and decaf alike – was associated with a lower risk of total mortality, including deaths attributed to heart disease, nervous system diseases and suicide.
More specifically, habitual coffee drinking has been linked to a lower risk of coronary heart disease in women.
For health-conscious coffee lovers then, the most important question isn’t, “Is it good for you?” but rather, “How do you take it?”
If you dress your coffee up too much with cream and sugar, you risk negating the health benefits.
“We know that sugar has adverse effects,” said Penny Kris-Etherton, a nutrition professor at Penn State University. “Even if you add sugar and don’t exceed your calorie needs, you’re still negating some of the benefits because sugar is a negative food ingredient.”
That warning goes double for even fancier coffee drinks. The federal dietary guidelines say three to five cups of coffee per day can be part of a healthy diet, but that only refers to plain black coffee.
“They’re not talking about these large Frappuccinos that have at least 800 calories a beverage,” Kris-Etherton said. “Very quickly, calories can add up, and weight gain will create negative effects on cardiac risk.”
Despite its benefits, caffeine also can be dangerous if consumed in excess.
“We all know how important sleep is,” Kris-Etherton said. “You don’t want to disrupt normal sleep habits and good sleep because you’ve had too much caffeine, so if you want to include coffee in your diet, be sure to think about timing.”
Anyone who’s had one cup too many knows that heart-fluttering feeling that comes next; for some people, those jitters may be a warning sign.
“Some people are slow metabolizers of caffeine,” Kris-Etherton said. “It’s a genetic predisposition. Some people can experience jitters, palpitation, insomnia – sort of like those energy drinks that give you a big boost.”
Caffeine also is addictive, and cutting back too quickly can cause withdrawal symptoms, especially terribly harsh headaches.
“Those migraines are pretty bad,” she said. “If you are drinking a lot and then go cold turkey, the effects will be greater than if you have less caffeine and taper off.”
It’s worth noting that kids shouldn’t drink coffee, Kris-Etherton said. The American Academy of Pediatrics recommends that, in general, kids avoid caffeine-containing beverages.
Kris-Etherton also cautioned that brewing methods can affect cardiovascular risk. For example, she said, paper filters remove a compound called cafestol that increases LDL cholesterol (the harmful type), so unfiltered coffee could pose a higher health risk.
“Most people drink filtered coffee,” she said. “But you know, French presses are so popular too, and that may not be good for you, especially if you drink a lot of coffee.”
Still, Kris-Etherton said, research shows that the health benefits of coffee – even decaf – seem to outweigh the risks: “Just pay attention to how you’re feeling after consuming coffee. Get in sync with how your body’s feeling.”
If you have questions or comments about this story, please email [email protected]
9 Reasons Why (the Right Amount of) Coffee Is Good for You
You could live longer.
Recent studies found that coffee drinkers are less likely to die from some of the leading causes of death in women: coronary heart disease, stroke, diabetes and kidney disease.
Your body may process glucose (or sugar) better.
That’s the theory behind studies that found that people who drink more coffee are less likely to get type 2 diabetes.
You’re less likely to develop heart failure.
Drinking one to two cups of coffee a day may help ward off heart failure, when a weakened heart has difficulty pumping enough blood to the body.
You are less likely to develop Parkinson’s disease.
Caffeine is not only linked to a lower chance of developing Parkinson’s disease, but it may also help those with the condition better control their movements.
Your liver will thank you.
Both regular and decaf coffee seem to have a protective effect on your liver. Research shows that coffee drinkers are more likely to have liver enzyme levels within a healthy range than people who don’t drink coffee.
Your DNA will be stronger.
Dark roast coffee decreases breakage in DNA strands, which occur naturally but can lead to cancer or tumors if not repaired by your cells.
Your odds of getting colon cancer will go way down.
One in 23 women develop colon cancer. But researchers found that coffee drinkers — decaf or regular — were 26 percent less likely to develop colorectal cancer.
You may decrease your risk of getting Alzheimer’s disease.
Almost two-thirds of Americans living with Alzheimer’s disease are women. But the caffeine in two cups of coffee may provide significant protection against developing the condition. In fact, researchers found that women age 65 and older who drank two to three cups of coffee a day were less likely to develop dementia in general.
You’re not as likely to suffer a stroke.
For women, drinking at least one cup of coffee a day is associated with lowered stroke risk, which is the fourth leading cause of female deaths.
20+ Harmful Effects of Caffeine
The harmful effects of caffeine are sometimes harder to find information on than all of the reported positives.
Here are a few of the studies that concluded that caffeine could be potentially dangerous to one’s health.
Research Showing Harmful Effects of Caffeine
- More than 4 cups of coffee linked to early death. A Mayo Clinic partnered study found that men who drank more than four 8 fl.oz. cups of coffee had a 21% increase in all-cause mortality. However, those that reported that they consumed excessive amounts of caffeine were also likely to smoke and have poor fitness. Dr. Nancy Snyderman from NBC said there were a few discrepancies with the study, but stresses that moderation is still key. See Her Interview Here. Another study showed that those who consume 6+ coffees per day have a greater risk of developing heart disease.
- Caffeine consumption may raise blood pressure. Especially in those already suffering from hypertension and those who don’t normally consume caffeine. People with hypertension were given 250 mg of caffeine (about 2 coffees) and the data revealed that their blood pressure was elevated for about 2-3 hours after the caffeine. Src. A second study performed by The Mayo Clinic found similar results from a 160 mg dose. All participants experienced a marked rise in blood pressure and it was the most pronounced in those that didn’t normally consume caffeine. Src.
- Increased risk of heart attacks among young adults. A study conducted by Dr. Lucio Mos found that young adults who were diagnosed with mild hypertension had 4 times the risk of having a heart attack if they consumed the amount of caffeine equivalent to 4 cups of coffee. More moderate consumption showed 3 times the risk. Src.
- Caffeine linked to gout attacks. This study showed that people who binge on caffeinated beverages increase their risk for a gout flare-up. Src.
- Breast tissue cysts in women. One study showed that “Women who consumed 31–250 mg of caffeine/day had a 1.5-fold increase in the odds of developing fibrocystic breast disease and women who drank over 500 mg/day had a 2.3-fold increase in the odds of developing cysts. Src.
- Caffeine could cause incontinence. A study out of the University of Alabama showed that women who consume a lot of caffeine are 70% more likely to develop incontinence. Src.
- Caffeine may cause insomnia. Caffeine in a person’s system at bedtime can mimic the symptoms of insomnia. Src.
- Caffeine can cause indigestion. People who consume caffeinated beverages often report an upset stomach or indigestion. This mainly occurs when the beverages are consumed on an empty stomach. Src.
- Caffeine can cause headaches. While occasional doses of caffeine can relieve headache symptoms, the overuse of caffeine can cause headaches and lead to migraines. Src.
- Caffeine could reduce fertility in women. A study from The University of Nevada School of Medicine showed that caffeine can reduce a woman’s chances of becoming pregnant by about 27%. Src.
- Caffeine and miscarriage risk: In a recent study, both men and women who consumed at least two caffeinated beverages a day during the weeks prior to conception slightly increased the risks of a miscarriage. Src.
- Caffeine may not be healthy for type 2 diabetics. A study conducted by the American Diabetes Association showed that caffeine impaired glucose metabolism in those with type 2 diabetes. Src.
- Caffeine overdose. While overdose is rare, it can lead to many adverse symptoms including death, especially in those with underlying medical conditions. Some have a lower tolerance for caffeine than others. Src.
- Caffeine allergies. Some people have over-sensitivity to the caffeine molecule, which causes allergic-like reactions in the body such as hives and pain. Although not a true allergy, many report very negative symptoms after consuming even the smallest amounts. Src.
- Caffeine causes more forceful heart contractions. A recent study showed that immediately after energy drink consumption the heart produced more forceful contractions. It is unclear if this has any long-term health implications except for those with known health conditions. Src.
- Worse menopause symptoms. A recent study published in The Journal of The North American Menopause Society showed that menopausal women who consumed caffeine had a greater degree of vasomotor symptoms. Src.
- Caffeine consumption can lead to increased anxiety, depression and the need for anxiety medication. Src and Src. See also our article as to why caffeine causes anxiety and panic attacks.
- Caffeine increases the number of sugary beverages consumed by people, which contributes to obesity and diabetes. Src.
- Caffeine inhibits collagen production in the skin. This effect is dose-dependent but really heavy caffeine consumers should be aware. The study.
- Caffeine interferes with ossification and could also lead to a greater risk of bone fractures. This is dose dependent, but heavy caffeine consumers should take note. Study 1 (pdf) Study 2.
- Caffeine does not help with prolonged sleep deprivation: This can lead to a false sense of security for those that have been sleep deprived for multiple days in a row and choose to get behind the wheel or do some other focus required task, thinking that as long as they have caffeine, they’ll be able to perform. Researchers from the American Academy of Sleep Medicine came to this conclusion after studying caffeine’s effects on their sleep-deprived test subjects. Here’s the study in detail.
- Caffeine may impair hearing loss recovery: For guinea pigs exposed to excessive levels of noise, caffeine was shown to delay the rate at which the guinea pigs recovered from noise-induced hearing loss. Here are the results of a recent study that investigated the problem. A correlation to humans is believed to exist but more research will be needed.
When not managed caffeine can quickly become an out of control problem.
If you are experiencing any tell-tale signs of the risks above, then it’s time to start cutting back. Otherwise, it’s just a matter of time.
If you want to reduce your caffeine intake (or quit entirely), here’s how:
1.Download our book Awake(it’s free).
2. Do the Overcoming Caffeine Withdrawal course at Udemy.
3. Use the Wean Caffeine supplement (something we helped get to market). It helps you avoid the painful withdrawal symptoms that often come when quitting caffeine abruptly.
Other Claims Against Caffeine
You may have heard or read about other negative health effects from caffeine consumption, but as of now, there just isn’t enough evidence to fully endorse those as legitimate health concerns.
Some of those negatives include:
- Adrenal fatigue
- Irregular heartbeat
- Accelerates bone loss. Src.
Caffeine is a drug and can affect people differently just like any other substance. It’s important that consumers understand how caffeine interacts with their bodies in regards to their personal health histories.
The food and beverage industry spends millions, if not billions, of dollars worldwide to fund studies and promote caffeinated products as safe or even healthy.
Fortunately, caffeine is one of the most researched substances on the planet and there does exist some unbiased data in which to glean some reliable information from.
While much of the research published does allude to the safety and even potential benefits of caffeine (in moderation), there are a handful of research studies that highlight the potentially harmful effects of caffeine.
The risks of suffering from any of the harmful effects of caffeine are diminished by being aware of how much is personally being consumed daily.
It is also important to be aware of any pre-existing medical conditions that may contribute to caffeine’s negative effects.
Written by Ted Kallmyer, last updated on December 6, 2019