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.
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

Study provides new insights into side effects of antipsychotics

Study provides new insights into side effects of antipsychotics

BIDMC review focuses on neural circuitry of wakefulness and sleep

BIDMC review focuses on neural circuitry of wakefulness and sleep

Caffeine cannot prevent memory deficits linked to alcohol consumption, study finds

Caffeine cannot prevent memory deficits linked to alcohol consumption, study finds

Research shows how trigger sounds cause brain connection overdrive in misophonia sufferers

Research shows how trigger sounds cause brain connection overdrive in misophonia sufferers

Sleep helps recalibrate brain cells responsible for learning and memory, mice study shows

Sleep helps recalibrate brain cells responsible for learning and memory, mice study shows

Anxiety linked to severe quality-of-life impairment in postmenopausal women

Anxiety linked to severe quality-of-life impairment in postmenopausal women

BetterYou magnesium can raise cellular mineral levels faster than traditional tablets

BetterYou magnesium can raise cellular mineral levels faster than traditional tablets

Oral vitamin spray or topical magnesium spray can help beat the blues, says TV chef Tonia Buxton

Oral vitamin spray or topical magnesium spray can help beat the blues, says TV chef Tonia Buxton

Short-term sleep loss affects cardiac function

Short-term sleep loss affects cardiac function

Moderate coffee consumption may offer protection against age-related cognitive decline

Moderate coffee consumption may offer protection against age-related cognitive decline

Research shows mechanism that induces heart arrhythmias in diabetic mice

Research shows mechanism that induces heart arrhythmias in diabetic mice

Dietary supplement extracted from Amaranthus can increase plasma nitrate, study shows

Dietary supplement extracted from Amaranthus can increase plasma nitrate, study shows