5-HIA, an organic acid and component of the neurotransmitter serotonin (the happy chemical) seen in the urine tends to be elevated in coffee drinkers, which means they may be at risk for lower levels of serotonin synthesis in the brain. Serotonin is necessary for normal sleep, bowel function, mood, and energy levels. It is a vicious cycle, as caffeine can disrupt sleep and promote anxiety and depression. We all know someone who tends to be tired, wired and over-caffeinated!
A growing body of research suggests an association between coffee drinking and a reduced risk of diabetes. A 2009 study found that the risk of developing diabetes dropped by 7 percent for each daily cup of coffee. Previous epidemiological studies reported that heavy coffee drinkers (those who regularly drink four or more cups daily) had a 50 percent lower risk of developing diabetes than light drinkers or nondrinkers.
Cardiovascular disease. Studies linking coffee consumption to cardiovascular disease have mostly observed it with higher consumption (well above four cups per day), and some of these studies did not account for smoking, which often accompanies coffee consumption and is, of course, an important cardiovascular disease risk factor on its own. Other concerns include modest and temporary elevations in blood pressure, and fast or abnormal heart rhythms.
If you think your morning cup of joe provides nothing more to your body than a jolt of caffeine, you might be pleasantly surprised to learn that your daily cup (or three) provides some health benefits as well. Drinking moderate amounts of coffee (including decaf) has been linked to lower risk of cardiovascular disease, Type 2 diabetes, Parkinson's disease and some cancers.
Do you remember the first time you had a cup of coffee? More likely than not, you were in college and cramming for a final and your roommate suggested brewing up a batch. It might have been love at first sip, or you could have stomached your way through it, hoping it’d help you ace your test. Either way, now that you’re older (and hopefully, wiser), Pearson says to make sure you actually like coffee or if you’re using it as a band-aid to your poor sleep habits. “Coffee is a pick-me-up, but working toward a normal sleep pattern will make life much better than caffeine. If you’re using coffee to survive on inadequate sleep, your body and mind are still tired and you’ll still not be at your best physically and mentally,” she explains. “Chronic inadequate sleep raises stress hormones and contributes to a lot of health problems.”
There’s no need to try anything crazy; the only performance enhancer you really need is coffee. Research has shown its ability to give workouts a boost and increase athletic performance, and that’s exactly why you’ll find so many Olympians drinking it: One report from the journal Applied Physiology, Nutrition, and Metabolism found the majority of the 20,686 Olympic athletes analyzed had caffeine in their urine.
In fact, coffee shows more antioxidant activity than green tea and cocoa, two antioxidant superstars. Scientists have identified approximately 1,000 antioxidants in unprocessed coffee beans, and hundreds more develop during the roasting process. Numerous studies have cited coffee as a major — and in some cases, the primary — dietary source of antioxidants for its subjects.
For the sake of something real journalists call “integrity” I should point out that coffee has also been shown to have a small, yet positive (which isn’t a good thing in this case) relationship with bladder (25) cancer. However, the same study that reported these finding, also reported that this relationship could also be linked to smoking or other dietary habits.
Previous research had suggested as much. For example, a 2017 report in the Annual Review of Nutrition, which analyzed the results of more than 100 coffee and caffeine studies, found coffee was associated with a probable decreased risk of cardiovascular disease—as well as type 2 diabetes and several kinds of cancer. The new paper, published Thursday in PLOS Biology, identifies a specific cellular mechanism by which coffee consumption may improve heart health.
We’re not talking about the inflammation caused by a killer workout, we mean the type of disease-causing inflammation that’s spurred and worsened by old age. Caffeine has an amazing influence on your immune system—so much in fact that nearly all the other health benefits below could be explained by its ability to fight and ward off disease (like type 2 diabetes and heart disease), according to research published in Nature Medicine. In short, caffeine blocks certain receptors on brain cells, which is how coffee has its stimulating “wake-up” effect. In impeding these receptors, caffeine also blocks pathways that product inflammatory molecules, the researchers found. So, as you age, don’t be wary of coffee. In this study, the older men and women who drank more caffeine had fewer inflammatory molecules; they also had lower blood pressure and more flexible arteries, more relatives who lived past age 90, and were healthier overall.
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