Caffeine News and Research

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Caffeine is a bitter substance found in coffee, tea, soft drinks, chocolate, some nuts and certain medicines. It has many effects on the body's metabolism, including stimulating the central nervous system. This can make you more alert and give you a boost of energy.

For most people, the amount of caffeine in two to four cups of coffee a day is not harmful. However, too much caffeine can make you restless, anxious and irritable. It may also keep you from sleeping well and cause headaches, abnormal heart rhythms or other problems. If you stop using caffeine, you could get withdrawal symptoms.

Some people are more sensitive to the effects of caffeine than others. They should limit their use of caffeine. So should pregnant and nursing women. Certain drugs and supplements may interact with caffeine. If you have questions about whether caffeine is safe for you, talk with your health care provider.
Summer perils and ways to avoid, treat them

Summer perils and ways to avoid, treat them

Study provides insight into mental resilience of journalists

Study provides insight into mental resilience of journalists

Energy drinks linked to risk of cardiac events in young people with familial long QT syndrome

Energy drinks linked to risk of cardiac events in young people with familial long QT syndrome

Heart health impact of energy drinks compared to other caffeinated beverages

Heart health impact of energy drinks compared to other caffeinated beverages

Drinking more than three cups of Italian-style coffee each day lowers prostate cancer risk

Drinking more than three cups of Italian-style coffee each day lowers prostate cancer risk

Working memory training combined with brain stimulation can improve performance, research shows

Working memory training combined with brain stimulation can improve performance, research shows

Systematic Review reveals safe levels of caffeine intake

Systematic Review reveals safe levels of caffeine intake

Stair walking can enhance feelings of energy than caffeine

Stair walking can enhance feelings of energy than caffeine

AANP urges patients to prioritize sleep for better health and well-being

AANP urges patients to prioritize sleep for better health and well-being

Study shows magnesium supplements can reduce chances of breaking a bone

Study shows magnesium supplements can reduce chances of breaking a bone

New study evaluates benefits, design and functionality of popular phone-based sleep apps

New study evaluates benefits, design and functionality of popular phone-based sleep apps

X-ray study sheds new light on promising drug target

X-ray study sheds new light on promising drug target

Excessive sweating could be hyperhidrosis that often goes undiagnosed

Excessive sweating could be hyperhidrosis that often goes undiagnosed

Five tips for parents and guardians to protect children from household poisons

Five tips for parents and guardians to protect children from household poisons

Nocturia is the top cause of sleep disturbance

Nocturia is the top cause of sleep disturbance

Healthy diets linked to better sperm quality and male fecundability

Healthy diets linked to better sperm quality and male fecundability

Caffeine may protect lungs from damage caused by prolonged oxygen therapy, study finds

Caffeine may protect lungs from damage caused by prolonged oxygen therapy, study finds

IU study reveals new compounds with potential to boost enzyme that could protect against dementia

IU study reveals new compounds with potential to boost enzyme that could protect against dementia

Study shows and measures effects of cognitive-enhancing drugs on chess play

Study shows and measures effects of cognitive-enhancing drugs on chess play

Clarkson University researcher explores acute effects of cocoa and caffeine

Clarkson University researcher explores acute effects of cocoa and caffeine