“Unlike sedatives, L-theanine doesn’t seem to dull the senses,” he explains. “It appears to do this by influencing key brain ...

Caffeine consumption before undergoing diagnostic brain dopamine imaging may also affect the imaging results. The research results were published in the Annals of Neurology on 20 May 2024.

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 ...

While caffeine is supposed to make you feel energized and alert, some people who drink coffee often feel tired after their ...

It can also cause insulin spikes and disrupt brain metabolism, potentially affecting cognitive function ... They can also contain caffeine, which can improve concentration and help you finish ...

We may earn a small commission on items purchased through this article, but that does not affect our editorial judgement. Struggling to concentrate or constantly forgetting things? Real users say this ...

Caffeine is a natural stimulant that primarily affects the central nervous system. It blocks adenosine, a neurotransmitter responsible for promoting relaxation and sleep, which leads to increased ...

Tea for kids Hidden risks revealed Learn how caffeine affects growth and sleep plus doctor-approved caffeine free ...

However, the variation is “quite rare, affecting only about 5 percent of the population, ” she notes. On top of that, having this gene variation also makes you a "slow caffeine metabolizer ...