4 cups of coffee a day

four cups of coffee a day increases the risk of early death, but only if you are under 55 years, US researchers found.
They found that drinking 28 cups of coffee per week increases by 50% the risk of death among young people. These findings are part of a major study of the American way of life, involving 43 727 volunteers aged 20 to 87 years.
US scientists believe that too much coffee can have a negative effect on the metabolism. Those with a "genetic predisposition" more susceptible to adverse effektu.

Their study contradicts a number of others, when it was proven that moderate coffee drinking leads to longevity, for example, that coffee can save a life. Over 16 years of research, it was revealed in 2500 deaths. Slightly less than a third of them have been linked to heart and arterial diseases. Participants who drank more coffee were more likely to smoke, and as a result, their heart and lungs were not zdorovymi.

The risk of death increased by 56% among men and women under the age of 55 years who drank more than 28 cups of coffee a week, the researchers found. They do not explain why coffee does not affect the elderly in the same manner. The drink contains thousands of different chemicals, which affect both positively and negatively on zdorove.

A recent study showed that coffee is a great source of antioxidants and can reduce inflammation and improve brain function, help combat stress. At the same time, coffee stimulates the secretion of insulin and epinephrine activity, increases blood pressure and the levels of homocysteine.

Source: vchaspik.ua/zhizn/1877134-chashki-kofe-v-den-privodyat-k-prezhdevremennoy-smerti