Scientists have been studying whether eight 8-ounce glasses are necessary, and whether moderate amounts of caffeine make you dehydrated. The answers: no and no.
It was claimed caffeine makes you urinate so much you become dehydrated. In fact, taken in moderate amounts, caffeinated beverages can contribute to your overall daily water needs. Drink up, but beware you might have to go to the bathroom a lot.
Does caffeine stunt growth? A lot of people may say that, but the science doesn't support the contention. It's an urban legend now. About 90 percent of Americans consume caffeine in one product or another.
Caffeine is the world's most popular stimulant. It and coffee are legal, and in moderate doses do no harm but actually may help people by decreasing the risk of several conditions.
U.S. National Public Radio published a February 2016 story titled "Caffeine for Sale: The Hidden Trade of the World's Favorite Stimulant" about how caffeine is removed from coffee beans and then where it goes after the decaf coffee is made.
Now there is a huge, worldwide trade in caffeine extracted from coffee beans. It is used in soda, energy drinks, medications and candies that have no natural caffeine content. And people wonder if synthetic caffeine is more dangerous than caffeine from natural sources. Scientists say there is no difference between the two.
In the 1990s, the Loughborough researchers measured brain waves of subjects in driving simulators. The caffeine nap worked better than anything at eliminating mid-afternoon drowsiness and preventing driving errors than in all of the other controlled groups they studied.
It seems caffeine may enhance memory and learning, but not if it is taken before the lesson is to be learned. Research from a few years ago says caffeine should be taken after that important business meeting, crucial college lecture or other knowledge-imparting event you need to recall.
Some studies show a benefit from caffeine on memory, some show none. Same with alcohol. But it seems scientists find with few exceptions that good diets promote healthy minds and bodies.
Whatever you do, don't begin using caffeine to treat ADHD without a doctor's advice. Parents with children with ADHD especially should take this advice to heart. Caution should be used by other people who have other health problems, such as anxiety, high blood pressure, glaucoma or heart, liver or kidney disease.
One doctor says: "Caffeine is not the answer for real, bonafide ADHD. I don't want parents to be deluded into a false sense of security that if I just go to the local Starbucks, I'm going to cure my son or daughter's ADHD."
Coffee is good for you. Two recent studies have shown that coffee can increase the length of the lives of those who drink it. It can be part of a healthy lifestyle. The two studies, which followed two large groups of coffee drinkers for 16 years, have shown that you can coffee and healthful living too.
"The key message is that people can drink coffee," associate professor of preventive medicine Victoria Setiawan at the Keck School of Medicine of the University of Southern California told TODAY. "It seems there's no long-term harm."
Is there a big difference between synthetic and natural caffeine? Apparently, synthetic caffeine is much more powerful than the caffeine found naturally in plants. The question is, is synthetic caffeine harmful?
Some fairly ominous-sounding chemicals are used to process synthetic caffeine. Websites are unclear as to whether the ethyl acetate and methylene chloride (and carbon dioxide) used to process urea to manufacture synthetic caffeine remain in the product. Ethyl acetate is used as a flavoring in some foods, though, so perhaps it is not harmful and may remain in synthetic caffeine.
Some research has suggested that caffeine may stimulate thermogenesis - a scientific name for the way your body generates heat and energy from the calories in your food; but nutrition experts say that this effect probably isn't enough to produce significant weight-loss. Caffeine may also reduce your desire to eat for a brief time, but again, there's no good evidence over the long-term that this effect leads to weight-loss. To date, no conclusive clinical studies have been done to determine the long-term effect of caffeine on weight loss, and the smaller studies that have been done show a lot of variability in the outcomes.
Preparing for exams and tests in high school and college may be essential to getting an A, entering the university of your dreams or making the grade to go on for a master’s degree. Assuming you’ve studied the subject or subjects thoroughly, what should you do just one before an exam?
If it’s a big mid-term or final, an Advanced Placement or a Graduate Record Exam or other graduate school test, most people have to study the subjects thoroughly during the semester or school year or years. Attempting to learn all the material one hour before the very end is not a good strategy for a final exam or for a placement test.
Caffeine and fasting are controversial in some circles. Is it truly fasting if you have coffee or other liquids during your time of abstaining from eating? Some people say to be a pure fast, one must drink only water and eat nothing. Others maintain that having coffee and/or other liquids is healthier and ensures you don’t become dehydrated.