How much coffee you can still drink a day without harm to health

Everything we consume caffeine: coffee, tea or other products. But no one still can not say what a safe dose of caffeine a day. Researchers have tried to look into the matter.

Not so long ago in the US appeared a new brand of coffee Black Insomnia, calling their products "the strongest coffee in the world." Advised to use it with caution. One cup of this coffee exceeds the limit of caffeine per day.

It is considered that this limit is 400 milligrams per day. So reported by Office of the Food and Drug AdministrationFDA to Investigate Added Caffeine. International Information Council FoodEverything You Need to Know About Caffeine.. 400 milligrams - about four cups coffee or one large cup of Starbucks.

Except that many perceive this limit is not a warning, but as a challenge.

A safe dose of caffeine per day

Where did this limitation and how seriously should treat it?

Researcher Esther Myers (Esther Myers) finds that quite seriously. She and her colleagues from the International Institute of Biological Sciences (USA) has been studying the safety of caffeine. Myers thought, if not obsolete so often referred to in the dose of 400 milligrams of caffeine a day. For the first time she appeared in a study conducted in 2003

The team re-analyzed the data MyersSystematic review of the potential adverse effects of caffeine consumption in healthy adults, pregnant women, adolescents, and children., Having studied more than 700 studies. They tried to find out what dose of caffeine negatively affects health. Among the mentioned side effects included problems with the cardiovascular, musculoskeletal and reproductive system.

The researchers concluded that a healthy adult to 400 milligrams of caffeine - really safe daily dose. But for pregnant women dose is reduced to 300 milligrams.

Higher doses of caffeine associated with the risk of various diseases - depression and dysphoria (the opposite of euphoria) to anxiety and elevated pressure.

It turns out, 500 milligrams of caffeine a day to drink is dangerous?

"No, - says Myers. - In many ways, it all depends on how a particular person reacts to caffeine. We do not yet have criteria for determining those who are particularly sensitive to it. "

Finally

The most important conclusion drawn by the researchers - is how little we know about the prevalence of drug use. There is still no definitive data on how to change the effects of caffeine, depending on whether, when and how often we eat.

So while we have only a rough idea of ​​what not to do - to go to far. For most people, 400 milligrams of caffeine a day - a safe dose, but not the fact that a completely harmless. Watch out for caffeine content of all common foods and treat him as a stimulants.