Caffeine affects the body in a variety of ways, particularly if you drink a lot. Having too much can cause gastrointestinal ...

Caffeine is the world's most widely consumed psychoactive drug, lauded for its energy-boosting and focus-enhancing effects.

Daily consumption of 200-300 mg of caffeine is usually safe. More than 300 mg of caffeine could have negative effects on the body, such as restlessness, anxiety, irritability, muscle tremors, ...

Caffeine is safe in moderate amounts, but excessive intake, especially from supplements or in children, can pose serious ...

How Does Caffeine Affect Your Blood Sugar? A growing body of research suggests people with type 2 diabetes react to caffeine differently. It can raise blood sugar and insulin levels for those with ...

But labels don't have to reveal how much caffeine the products pack. We will. We measured the amount in 27 top-selling energy drinks and shots (see table below). We bought the drinks online or at ...

Matcha's caffeine content can vary depending on how it is grown, brewed, and its quality. Find out how much caffeine is in a cup of matcha.

Few substances have woven themselves so seamlessly into the fabric of daily life as caffeine. Found in coffee, tea, chocolate and countless performance-enhancing supplements, this naturally ...