Scientists have finally unraveled the riddle of weight gain after quitting smoking
Smoking is pyrolytic inhalation (inhalation of smoke) of preparations, mainly of vegetable origin, smoldering in the flow of inhaled air, in order to saturate the organism with the active substances contained in them by sublimation and subsequent absorption in the lungs and respiratory tract. As a rule, it is used for the use of smoking mixtures possessing narcotic properties ( tobacco, hashish, marijuana, opium, crack, etc. ) due to the rapid intake of psychoactive substances in the brain. Also, smoking or incense means burning or vaporizing incense and aromatic substances used in religious rituals, in aromatherapy and for air aromatization.
For countries and territories of the world that provide relevant information to WHO, the prevalence of tobacco smoking among adults varies from 4% in Libya to 54% in Nauru. The top ten countries with the most widespread smoking of tobacco include, in addition to Nauru, Guinea, Namibia, Kenya, Bosnia and Herzegovina, Mongolia, Yemen, Sao Tome and Principe, Turkey, Romania. Russia in this series of 153 countries ranks 33rd (37% of adults smoke). However, in spite of the fact that, for example, the United States ranks 98th in this series (24%), cigarette consumption here is on average higher per capita than in many countries with a higher prevalence of smoking among the adult population. If in the USA about 6 cigarettes per capita are consumed daily (that is, including children and all non-smokers), then in Russia it is less than 5. And the highest level of per capita cigarette consumption in Greece is almost 12 per person per day. According to the latest WHO data, Turkmenistan is the country with the lowest percentage of smokers in the world.
Scientists from the Institute of Life Sciences at the University of Michigan conducted a study in which they found that the relationship between stopping smoking and weight gain can explain the discovery of a new type of fat cell - beige fat .
During the scientific experiment, experts examined beige fat and found that it contains CHRNA2, a protein that is encoded by the gene of the same name, writes the Independent. In white fat, such a protein encoded by a gene was not detected, scientists noted.
CHRNA2 is also associated with the level of nicotine dependence in the brain. Thus, this relationship can explain the appearance of excess weight after a complete cessation of smoking, to get rid of which is quite difficult for a long time.
"We will continue to investigate beige fat and hope that this will help us find answers to those questions that previously were not explainable," the author of the study, Professor Jun Wu summarized.