Caffeine

Caffeine is perhaps the world's most popular mood-altering drug. Found commonly in coffee and tea, it stimulates the central nervous system to make your body and mind feel more awake. Here's the latest science news on caffeine, including its effects on the body, and possible benefits and risks.
Latest about caffeine

Does caffeine help or cause headaches?
By Donavyn Coffey published
Caffeine's influence over headaches is complicated.

Does coffee really give you an 'energy boost'?
By Emma Beckett published
Coffee may make you less drowsy, but it doesn't really "energize" the body.

These 7 Foods Cause the Most Pet Deaths
By Bahar Gholipour last updated
Researchers drew up a list of the "people foods" that are the most common culprits in pet poisonings worldwide.

Why is chocolate bad for dogs?
By Remy Melina, Mindy Weisberger last updated
Is it really that bad to give a dog a bite of a chocolate bar? Live Science investigates just how much chocolate is lethal to dogs.

Can Energy Drinks Cause Miscarriages?
By Rachael Rettner last updated
The effect of caffeine on miscarriage is still uncertain, experts say.

Does coffee really stunt kids' growth?
By Benjamin Plackett last updated
It's probably fine to give your child weak coffee, as long as you skip the sugar.

Man dies from caffeine overdose after drinking equivalent of 200 cups of coffee
By Rachael Rettner last updated
Caffeine powders can be dangerous because they are much more potent than typical caffeine-containing beverages.

Man's energy drink habit lands him in the hospital with heart failure
By Rachael Rettner published
The findings add to a growing body of evidence linking energy drink consumption with heart problems.
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