How much coffee you can drink in a day?! ..

One cup of coffee a day reduces blood pressure, two cups - prevent dementia, and six cups of coffee reduces the risk of skin cancer. But on the other hand, studies have shown that high doses of caffeine can pose a health risk. So how much coffee you can drink a day. To answer this question, we need to know the pros and cons of daily coffee consumption.

One cup of coffee a day: Drinking just one cup of coffee a day can lower blood pressure, proven by the Greek research conducted with the help of 485 volunteers aged from 65 to 100. One cup every morning can reduce blood pressure. The researchers found those who drank one to two cups a day were healthy arteries. Scientists believe that this is due to the antioxidants in coffee, which increase the production of nitric oxide Nitric oxide ... helps to relax the arterial wall, and lower blood pressure. One cup of coffee increases the mental capacity: it could be because the caffeine absorbs more sugar to get into the brain, giving it extra energy and creates a temporary "lift" the activity of brain activity. CONS: Even one cup throughout the day can cause insomnia. To completely remove the caffeine from the body, it takes about eight hours. If you suffer from insomnia, do not drink coffee after 3 or 4 o'clock in the afternoon.

Two cups PROS: This is the amount of coffee a day can save from Alzheimer's disease, say scientists from the University of Florida. Although the findings were made on the basis of animal studies, scientists claim that about 200 mg of caffeine, the equivalent of two cups of coffee, can help prevent the accumulation of proteins in the brain that are associated with memory loss and cause Alzheimer's disease. Drinking the equivalent of two cups of coffee 30 minutes before exercise can improve performance by providing more energy. This process occurs as a result of stimulation of the production of fatty acids in the body, which is used as fuel. CONS: For pregnant upper limit of caffeine intake should be 200 mg, or two cups of coffee. Caffeine increases the level of hormones and adrenaline in the body, which can increase the risk of miscarriage.

Three cups FOR: caffeine intake of three cups of coffee a day can reduce the risk of ovarian cancer by a fifth. Men who drink three cups of coffee, 40 percent reduced risk of developing gallstones. Scientists believe that caffeine stimulates the reduction in the gall bladder, ensuring the removal of small stones, before they develop into a serious problem. CONS: drinking more than three cups of coffee a day can increase the risk of heart attack. And, paradoxically it seems at first glance, but three cups of coffee a day can cause a decrease in female bust. Researchers polled nearly 300 women and compare their bust size and the number of drinking coffee, we found a clear pattern between the amount of coffee drunk per day, and breast reduction. Influence of caffeine on estrogen levels may explain these results, say the researchers.

Four cup at 400 mg caffeine in four cups of coffee, researchers believe, provides maximum benefit in combating coffee antioxidants. Scientists from the University of Utah have found that people who drink four cups of coffee each day, 39 percent less likely to suffer from cancer of the mouth and throat. Other studies show that an amount of coffee may reduce the risk of prostate cancer, and type 2 diabetes. CONS: Those who drink four cups of coffee a day twice as likely to develop rheumatoid arthritis. Researchers believe that coffee can increase the levels of the compounds in the body that can lead to inflammation and pain in joints.

Five cups FOR: Researchers at the National Cancer Center in Tokyo found that drinking five cups of coffee reduces the risk of serious liver damage in the three quarters. Their findings were based on a study of 90,000 middle-aged men and women for ten years. CONS: Several studies have shown that such a quantity of coffee is a risk factor for osteoporosis, because caffeine can interfere with calcium absorption. However, many experts dispute this and argue that there is no conclusive evidence of the effect of coffee on the bone, but still recommend no more than five cups just in case.

Six or more cups of coffee a day: Drinking six or more cups of coffee a day can reduce the risk of some skin cancers by 31 percent (according to researchers at Wayne State University in Detroit). They believe that antioxidants can protect skin cells. CONS: This is the amount of coffee can lead to dehydration. It can also cause the body to activate hormones that related to anxiety and stress can lead to irritable bowel syndrome, increased blood pressure, and in turn, the risk of cardiovascular diseases. This amount of caffeine can definitely have serious health consequences.