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Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Mar 19, 2022 · Caffeine has its perks, but it can pose problems too. Find out how much is too much and if you need to curb your consumption. If you rely on caffeine to wake you up and keep you going, you aren't alone. Millions of people rely on caffeine every day to stay alert and improve concentration.
Apr 26, 2022 · Up to 400 milligrams of caffeine a day is considered safe for most adults. However, people's sensitivity to caffeine varies. If you're bothered by headaches, restlessness or anxiety, you may want to reevaluate your caffeine intake.
May 18, 2023 · Caffeine is a natural stimulant most commonly found in tea, coffee, and cacao plants. It works by stimulating the brain and central nervous system, helping you stay alert and prevent the onset of...
Overview. Caffeine is a natural chemical with stimulant effects. It is found in coffee, tea, cola, cocoa, guarana, yerba mate, and over 60 other products. Caffeine works by stimulating the...
Jul 24, 2023 · Caffeine is a stimulant that occurs naturally in some foods. The Food and Drug Administration (FDA) recommends a maximum intake of 400 mg a day, or two to three cups of coffee. A moderate intake...
May 9, 2023 · Caffeine can kick start your senses within 15 minutes. See exactly what caffeine does to your body with this interactive graphic.
Caffeine is a mild stimulant to the central nervous system that quickly boosts our alertness and energy levels. Learn more about caffeine and health.
Jul 11, 2024 · Natural caffeine, found in coffee, tea, and cocoa, may do more than give you a morning jolt. Unlike synthetic caffeine, natural caffeine contains antioxidants and other important nutrients that have been linked to several health benefits.
May 2, 2023 · Safe vs Unsafe Levels of Caffeine Consumption. Most adults can safely consume about 400 milligrams of caffeine a day. That’s about what you’d get by drinking four to five average-sized cups of...