Scientists have found that exposure to sunlight makes men eat more and gain weight accordingly
The hormones ghrelin and leptin are involved in the regulation of appetite. Levels of the former rise when the stomach is empty. In this case, the secretion of the hormone can be controlled by sound, light, smell.
Scientists analyzed data from a three-yearnational nutrition study of 3,000 people. It turned out that there is a relationship between nutrition, gender and time of year. From March to September, men begin to eat more compared to the colder period: 2188 calories versus 1875 calories per day, respectively. But for women, nothing changes.
The researchers also asked for volunteers - fivemen and five women 18-55 years old - to be in the sun for about 25 minutes at noon. Then blood samples were taken from them. It turned out that with solar exposure in men, the metabolism of lipids and steroids increases. The scientists then exposed the mice to UV light daily for ten weeks. This was comparable to if a person were in the sun for 20-30 minutes a day in Florida. As in humans, after exposure to ultraviolet radiation, male mice showed more protein changes associated with metabolism. The rodents searched for food more actively and ate more.