What is caffeine? (1)
Caffeine is a natural stimulant that’s widely consumed worldwide. It helps you stay awake and can stave off tiredness.
How it works (2)
Caffeine’s main effect is on the brain. It stimulates the brain by blocking the effects of the neurotransmitter adenosine.
What foods and drinks contain caffeine? (3)
Caffeine is most commonly found in coffee, tea, soft drinks, chocolate, and energy drinks.
May improve mood and brain function (4)
Caffeine may improve mood, decrease the likelihood of depression, stimulate brain function, and protect against Alzheimer’s and Parkinson’s disease.
May boost metabolism and fat burning (5)
Caffeine may boost metabolism and promote fat loss, but these effects are likely to remain small over the long term.
May enhance exercise performance (6)
Consuming small amounts of caffeine about an hour before exercise is likely to improve exercise performance.
May protect against heart disease and diabetes (7)
Caffeinated beverages like coffee and tea may reduce the risk of heart disease and type 2 diabetes, although this may depend on the individual.
Other health benefits of coffee (8)
Drinking coffee may promote a healthy liver, skin, and digestive tract. It may also prolong life and help prevent several diseases.
Safety and side effects (9)
Caffeine can have negative side effects in some people, including anxiety, restlessness, and trouble sleeping. keep reading more
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