Coffee and health: What does the research say? - Mayo Clinic
2022年3月19日 · For example, it can temporarily raise blood pressure. Women who are pregnant, trying to become pregnant or breastfeeding need to be cautious about caffeine. High intake of boiled, unfiltered coffee has been associated with mild increase in cholesterol levels. The bottom line? Your coffee habit is probably fine and may even have some benefits.
Caffeine: How much is too much? - Mayo Clinic
2022年3月19日 · Caffeine in powder or liquid form can provide toxic levels of caffeine, the U.S. Food and Drug Administration has cautioned. Just one teaspoon of powdered caffeine is equivalent to about 28 cups of coffee. Such high levels of caffeine can cause serious health problems and possibly death.
Yerba mate: Is it safe to drink? - Mayo Clinic
2023年2月14日 · Yerba mate, also known as mate, is an herbal tea. It's a traditional drink in Latin and South America. It's made by steeping dried leaves from the yerba mate plant in hot water. Yerba mate can be served cold or hot. Like black or green tea, it has caffeine, which can make you feel more alert and focused.
Caffeine content for coffee, tea, soda and more - Mayo Clinic
2022年4月26日 · Check the charts for an idea of the caffeine content in popular beverages. Drink sizes are in fluid ounces (oz.) and milliliters (mL). Caffeine is shown in milligrams (mg). Keep in mind that the actual caffeine content of a cup of coffee or tea can vary quite a bit. Factors such as processing and brewing time affect the caffeine level.
Caffeine: Does it affect blood sugar? - Mayo Clinic
2024年3月7日 · For most healthy adults, caffeine doesn't noticeably affect blood sugar. The medical term for blood sugar is glucose. Having up to 400 milligrams of caffeine a day seems to be safe for most people. In the U.S., one of the most common sources of caffeine is coffee. The average U.S. adult drinks about two 8-ounce (240-milliliter) cups of coffee a ...
Caffeine: How does it affect blood pressure? - Mayo Clinic
2024年7月9日 · It's not clear why caffeine causes some people's blood pressure to briefly rise. Some researchers think that caffeine could block a hormone that helps keep the arteries widened. Others think that caffeine causes the adrenal glands to release more adrenaline, which causes blood pressure to go up. Stress also might play a role.
Taurine in energy drinks: What is it? - Mayo Clinic
2023年5月10日 · Most of these issues seem to be from the caffeine in the energy drinks. Because of the caffeine, children or teens should not drink energy drinks, according to the American Academy of Pediatrics. Consider tracking the amount of caffeine and sugar from your energy drinks. It can help you avoid calories and the challenges from too much caffeine.
Creatine - Mayo Clinic
2023年12月13日 · Caffeine. Combining caffeine with creatine might decrease the efficacy of creatine. Use of creatine with a daily amount of caffeine greater than 300 milligrams might also worsen the progression of Parkinson's disease. Further research is needed.
Sleep tips: 6 steps to better sleep - Mayo Clinic
2022年5月7日 · Nicotine, caffeine and alcohol deserve caution, too. The stimulating effects of nicotine and caffeine take hours to wear off and can interfere with sleep. And even though alcohol might make you feel sleepy at first, it can disrupt sleep later in the night.
Kombucha tea: Does it have health benefits? - Mayo Clinic
2024年9月26日 · In short, there isn't enough proof that kombucha tea has the health benefits that some claim. At the same time, cases of harm have been reported. People who are pregnant or breastfeeding or who have weakened immune systems should avoid kombucha tea. Others may drink the tea if they like the taste, but only if it comes from a trusted source.