One of the most important problems and also most controversial in our lives is the weight gain and the resulting obesity and its consequences. It is an extremely complex issue that involves many factors that intertwine and affect our health: excessive food intake (calories), food absorption, lack or deficiency of physical activity, individual metabolism, hormonal disorders. However, often forget that the human being has developed over the millennia a high capacity of energy storage (fat). Just so he survived the long days without hunting, eating only small fruits and seeds. It turns out that now the energy supply is usually abundant – though not necessarily healthy – and physical activity decreases more and more. Result: the calories left over will turn into fat. Life expectancy also increased too, now reaching 80 years. Woman survives decades after menopause and is subject to numerous conditions that their ancestors never would. In prehistoric times the life expectancy was 30-40 years. Few amounted to more than that. There was no time to have osteoporosis, most cancers, arthritis and obesity … Today latter can already be considered a worldwide epidemic, threatening the health and well – being of billions of people.

And the Mirena, what about it? Does it increase weight? We know that certain hormones can affect metabolism, predisposing to weight loss or gain. The hormonal IUD (Mirena) releases the hormone levonorgestrel (like progesterone) at doses between 10 and 20 mcg / 24h, in the uterine cavity for five years. It does not release estrogen. Just to compare, the best selling pills in Brazil have 150 mcg of levonorgestrel per tablet, and an estrogen. Therefore the dose delivered by Mirena is considered minimal and moreover only a small part absorbed by the body falls into the bloodstream. Thus, most of the studies did not show a weight increase beyond what is observed in the control groups.

It is important to understand that scientific studies have to have these control groups, whose components are similar to the study group at all (age, gender, habits, food, etc.) except the factor being analyzed in the case: Mirena. Ah, but my neighbor gained 3kg, 4kg … wench! This does not apply. Not controlled. It is not known which habits have been changed, what foods she ingested, if she does regular physical activity and MOST important: the years have passed. That’s right. Time is cruel to most people, especially for weight gain. A certain woman who married for 4 years you can see that in this period may have gained a few extra pounds. Probably she will be using a pill and it will be considered the “guilty”. If our friend noted, a few meters from her find her husband with a beautiful waist and also their extra kilos. It’s sad, but it is reality. Anyway, Mirena is not fattening, but life is…