Do you want skinny kids? Do not have sex in summer

For lean children and with some weight-related problems one must concentrate the bad and the time of conception during the coldest months. This is what emerges from a study published in the journal Nature Medicine, conducted by the team of scientists of the Federal Ethics Hospital of Zurich . According to research, the design during the winter months – so with greater exposure to colder temperatures – would allow the birth of leaner and leaner children. The greatest responsibility is attributable to the paternal role and exposure to cold, a condition that would have a greater impact on the production of BAT, ie brown adipose tissue

The presence of this brown fat is genetically transmitted from father to children: the higher the percentage, the greater the chance of developing a lean, dry constitution that can burn calories and fat quickly. The BAT stimulated by the cold, is considered a positive adipose tissue because it protects the body from the gel and, at the same time, helps to get rid of fat. It is typical and abundant in hibernating animals, as a protective presence that allows the exploitation of energy stocks, given by the defined white fat accumulation. The study was also performed in the laboratory, using a group of mice as guinea pigs, one exposed at a temperature of 23 degrees and the other 8 degrees, just during the mating.

On the contrary, a summer design affects on the genetics of the unborn child, who will be more predisposed to weight problems with a higher percentage of white fat related to heart disease and to tumors. The studies conducted by the team focused attention on the type of temperature present at the time of conception, or in the period just before the same. As Christian Wolfrum of Eth confirmed, at the head of the study, until now the hypothesis on mating and fat percentage were false: " Until now, the hypothesis was that this had to do with the temperatures at which people were exposed during the course of life, but our observations suggest that even pre-conception temperatures could affect fat brown. "

The study led to the observation of images of computerized tomography 8,400 adults, all designed during the most difficult seasons and with a very high BAT index, unlike the summer season.