Owners of the first blood group are less likely to suffer from heart disease
Last reviewed: 23.04.2024
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People with the second, third and fourth blood group are at increased risk of developing coronary heart disease in comparison with the owners of the first group.
Scientists at the Harvard School of Health in Boston, USA, analyzed the results of two studies - the Nurses' Health Study and the Health Professionals Follow-up Study. In the first, 62,073 women participated, and in the second - 27,428 adult respondents of both sexes. Age of subjects - from 30 to 75 years, observations lasted twenty or more years. The analysis took into account factors such as nutrition, age, body mass index, sex, race, smoking, menopause, medical history.
As it turned out, people with the fourth blood group (7% of the population of the United States) are 23% more likely to "spoil" their heart health. In the third group, this risk is increased by 11%, and the second group increases the probability of disease occurrence by 5%. By the way, about 43% of Americans have the first blood group.
Biological processes, which determine the connection of the blood group with the risk of developing coronary heart disease, are not yet clear to researchers. According to them, various mechanisms can be used here. For example, it is known that the second group is associated with an increased concentration of low-density lipoprotein - "bad" cholesterol, which can clog the arteries, and the fourth is associated with inflammation that can affect the function of blood vessels. In addition, the owners of the first group often find an increased content of a substance that plays an important role in the blood flow and the formation of blood clots.
According to the American National Red Cross Society, about 45% of whites, 51% of blacks, 57% of Hispanics and 40% of Asians have blood of the first group. Such people are called universal donors, since their blood can be transfused to everyone. The least common is the fourth group: it has 4% of white, 4% of blacks, 2% of Hispanics and 7% of Asians. Slightly more common is the third group - 11% white, 19% black, 10% Hispanic and 25% Asian. And the second group is owned by 40% of whites, 25% of blacks, 31% of Hispanics and 28% of Asians.
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