Only, men and women are not housed in the same boat with regard to this influence.
According to researchers at Tel Aviv University who conducted the study we are going to talk regarding, a man consumes an average of 300 more calories per day in summer than the rest of the year.
It’s in the magazine Nature Metabolism that this result has been published, and what is relatively surprising is that these additional calories do not appear at all in women.
A hormone that increases in men
How to explain this? In men, this exposure to the sun’s rays would release ghrelin, a hormone responsible for the feeling of hunger.
These are five clinical trials (male and female participants “taken” the sun for 25 minutes) which have shown that the level of this hormone had increased only in men. It turns out that the female hormone estrogen reduces the rise in ghrelin because it prevents the skin’s DNA from being damaged in the sun. Less ghrelin, less hunger, mechanically.
Protection once morest cardiovascular disease
Carmit Levy, co-author and professor in the Department of genetic Molecular Studies at Tel Aviv University, further explains: “Ghrelin might be the mechanical link between sun exposure and the reduction of maladies cardiovascular”. The hormone thus takes on other roles, such as reducing blood pressure and inflammation, as well as muscle wasting.
Attention however, reminds us the information site Slate which relays the words of one of the dietitian Duane Mellor of Aston University (UK), who was not involved in this study: “This article does not claim that sun exposure will cause weight gain in men. It provides insight into the role of the hormone ghrelin in reducing cardiovascular risk and inflammation”.
