Caffeine is a bitter substance found in coffee, tea, soft drinks, chocolate, some nuts and certain medicines. It has many effects on the body's metabolism, including stimulating the central nervous system. This can make you more alert and give you a boost of energy.
The Food and Drug Administration recommends healthy adults not exceed 400 milligrams (mg) of caffeine-; approximately four cups of brewed coffee-; a day.
A new scientific review, published in Nutrients, highlights coffee's effects on digestion and the gut, and its impact on organs involved in digestion.
Receptors are docking stations found on the surface of cells. Compounds such as caffeinE, dopamine, THC, and LSD, all bind to these receptors.
In the first study of its kind to explore caffeine's effects on dynamic visual skills, researchers concluded that caffeine increases alertness and detection accuracy for moving targets. Caffeine also improved participants' reaction times.
An Austrian–German group of researchers recently discovered proof that gallic acid influences gastric acid release by driving a bitter receptor.
Coffee, that savior of the underslept, comes with enormous environmental and social costs, from the loss of forest habitats as woodlands are converted to crops, to the economic precarity of small-scale farmers whose livelihoods depend on the whims of international markets.
With the introduction of novel caffeinated beverages in the US market over the past several years, including energy drinks, caffeinated waters, and greater array of cold brew and specialty coffees, an updated understanding of caffeine consumption from beverages is warranted.
There's nothing like a shot of espresso when you need to get some studying done--and now, it seems like bees learn better with a jolt of their favorite caffeine-laced nectar, too.
In the largest study of its kind, an investigation by UC San Francisco has found no evidence that moderate coffee consumption can cause cardiac arrhythmia.
Consuming large amounts of daily caffeine may increase the risk of glaucoma more than three-fold for those with a genetic predisposition to higher eye pressure according to an international, multi-center study.
If someone craves a strong caffeine hit or like the frothiness of a milky cappuccino, their daily coffee order can reveal more about their health than they realize.
Coffee, cola, or an energy drink: caffeine is the world's most widely consumed psychoactive substance. Researchers from the University of Basel have now shown in a study that regular caffeine intake can change the gray matter of the brain. However, the effect appears to be temporary.
New research finds caffeine consumed during pregnancy can change important brain pathways that could lead to behavioral problems later in life.
The Institute for Scientific Information on Coffee (ISIC) published a new report today, titled 'Coffee and sleep in everyday lives', authored by Professor Renata Riha, from the Department of Sleep Medicine at the University of Edinburgh.
A new study exploring the impact of repeated sleep loss during a simulated working week has found that consuming caffeinated coffee during the day helps to minimize reductions in attention and cognitive function, compared to decaffeinated coffee.
Good news for those who need a cuppa to start the day. Researchers from the National University of Singapore (NUS) have created new probiotic coffee and tea drinks that are packed with gut-friendly live probiotics.
Bacteria and other microorganisms in the digestive tract are linked with dozens of health conditions including high blood pressure, high blood lipids, and body mass index (BMI) according to research presented today at ESC Congress 2020.
Older men who have a weak or irregular circadian rhythm guiding their daily cycles of rest and activity are more likely to later develop Parkinson's disease, according to a new study by scientists at the UC San Francisco Weill Institute for Neurosciences who analyzed 11 years of data for nearly 3,000 independently living older men.
Women who drink two or three cups of coffee a day have been found to have a lower total body fat than those who drink less, according to a new study.
Cold-brew might be a popular trend in coffee-making, but little is known about the way this process changes the chemical characteristics of the drink.