Four cups of coffee a day increases the risk of early death, but only if you are under 55 years of age, U.S. researchers have found.
They found that drinking 28 cups of coffee per week increases by 50% the risk of death among young people. These results are part of a major study of American life, with the participation of 43,727 volunteers aged from 20 to 87 years.
U.S. scientists believe that too much coffee can have a negative effect on metabolism. Those with "genetic predisposition" are more prone to adverse effects. Their study contradicts a number of others, when it was shown that moderate coffee drinking leads to longevity, for example, that coffee can save lives . Over 16 years of research found in 2500 deaths. Just under a third of them were associated with cardiac or arterial diseases. Participants who drank more coffee were more likely to smoke, and as a consequence, their heart and lungs were not healthy. risk of death increased by 56% among men and women aged under 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 way. Drink contains thousands of different chemicals that affect both positively and negatively on health. Recent research has shown that coffee is an excellent source of antioxidants and can reduce inflammation and improve brain function, help fight stress. At the same time, coffee stimulates the secretion of insulin and epinephrine activity, increases blood pressure and the levels of homocysteine.
