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After 27 years of brain aging scientists have long wondered when our brain starts to grow old? at what age is lost clarity of mind, intelligence and speed changes of thinking, and when memory begins to deteriorate? a study conducted by experts of the university of virginia (usa) gave an unexpected answer. the process of brain aging, as shown by the study begins in 27 years, with a brain capacity peak at 22 years old. and the knowledge that acquired throughout their lives, saved an average of 60 years.     fish protects the heart the risk of heart problems is much lower in women who regularly eat fish rich in omega-3 fatty acids. this is indicated by the results of a recent danish study. the study included women aged 15 to 49 years. it turned out that those representatives of the weaker sex who eat fish rarely or never been to eat 2 times more likely to suffer from cardiovascular disease than those who ate fish regularly. in general, the risk of cardiovascular disease for women who rarely eat fish, 90% higher than for women who consume fish once a week. most of the women interviewed who regularly include in the diet of fish, they said they prefer salmon, cod, herring and mackerel, which are rich in omega-3 fatty acids. to feel the positive effects of fish consumption, to include it in the menu, you need at least twice a week. smoking triggers miscarriage it is known that most miscarriages occur directly in the first trimester of pregnancy, and experts believe that most of them are caused by random genetic abnormalities that can not be prevented. however, some habits are closely related to the relatively high risk of miscarriage, including the use of alcohol or drugs, and according to recent research, and smoking. the japanese study involving nearly 1,300 women found that smoking pregnant women in 2 times more prone to spontaneous abortion in the first trimester of pregnancy compared to women who do not smoke. the study also proved that smoking can lead to premature birth, low birth weight and stillbirth. kidney stones and atherosclerosis new research has shown that young people who have had kidney stones, may have an increased risk of atherosclerosis (blood clots in blood vessels). according to scientists, this does not mean that one is the cause of the other, but both diseases may have a common cause. diabetes, high cholesterol, smoking and high blood pressure (hypertension) increases the risk of atherosclerosis, which can lead to heart attack and stroke. and the fact that people with kidney stones have an increased risk of atherosclerosis, is not really surprising, because previous studies have also linked the formation of kidney stones with hypertension. however, about 5% of the us adult population has kidney stones. the potential risk of nephrolithiasis can be reduced if you drink about 2 liters of fluid a day and cut salt intake and meat. atherosclerosis risk can be reduced through proper nutrition and exercise. allergy to rest before leaving on vacation to a warmer climate, we often do not think about changing the climate. but our bodies can react differently to abrupt climate change. the most common reaction - an allergy. small allergenic rash, itching, flaking and dryness can be prevented through proper skin care, but what to do if they have already appeared? first of all, please antihistamine tablets. do not wash with tap water, it may be too tight or, conversely, is too soft for your skin. regularly refresh the skin of mineral bottled water. makeup rinse micellar fluid, to avoid irritation. the most unpleasant symptom of allergy - itchy. to fix it, 2 times a day to make compresses from broth chamomile (antimicrobial) and calendula (soothing). if the itching became unbearable, it is worth to take advantage of medical ointments, for example, cortisone ointment. do not delay the campaign to the doctor if these funds do not help you, and remember, you can fight with allergies.