The decision about taking up the work on reducing excess body mass is right. However, the strategy of losing weight should be planned in the appropriate way, not only regarding the means, but also time. In other situation it may cause many negative consequences, including that concerning significant fall of libido.
What happens in the body during the slimming period?
The process of losing weight causes real hormone disturbances in the body. The calorific deficit, together with the physical activity, results in many physiological changes which are supposed to adjust the body to hard conditions and supplying it with appropriate amount of energy. Vast majority of the consequences is definitely positive. Opening the biochemical pathways which let gain energy from the spare fat makes the body composition much better. It is significant not only from the aesthetic point of view, but also metabolic: along with reducing the energy supply and spare fat, the production of inflammatory factors, as well as other adipokines responsible for the disturbance of homeostasis in the body, is lowered. The insulin sensitivity is also better, which influences the better carbohydrate economy, also the lipid economy is regulated. In long perspective, however, the negative effects of slimming are visible. The body tries to adapt to the low availability of food by starting the compensation mechanisms and searching for energy savings.
Losing weight and reproductive functions
There are many dysfunctions that can be listed because of the long-term energy deficit. In my opinion, the most characteristic effect is the slower metabolic pace connected with smaller activity of thyroid and disabling its hormone metabolism. However, these are not all the negative consequences. Too long process of losing weight leads to noticeable decrease in sex drive for both, men and women. It is connected with a quite simple and well justified biologically mechanism. The body reads the permanent calorific deficit as a signal that there are not good conditions for procreation. Ultimately, when there is no food, having offspring means condemning them or the parent on dying of hunger (this way the body "thinks", but it is extremely logical). Therefore, the reproductive functions are blocked, men notice the fall of testosterone and estradiol, which causes lower libido, and women may even observe total suspension of the menstrual cycle.
Although the excess body weight connected with gathering spare fat may be a "libido killing" factor itself, also the long-lasting fight to regain shape causes similar consequences. The process of slimming should be done in a rational way, so that the reduction period does not last permanently for many months. However, it does not mean that losing weight should be done as quickly as possible, because too fast reduction is unhealthy, too. The key is to find the balance in order to leave the body in a good metabolic condition after fighting with excess weight. I will describe this aspect more widely soon, in my next article, in which I will try to answer the question: "how long should a well-thought reduction last?"