Sleep, or rather the lack of it can cast a great influence on your fertility both directly and indirectly. According to the IVF centre, It is well known that poor sleep can result in stress and an increase in weight. However, few people know that it can also affect fertility levels. It might require infertility treatment if you develop changes in the body due to long term lack of sleep. The reason behind this fact is that a lack of sleep tends to affect the various hormones of our body (ghrelin, insulin, leptin, and cortisol). Cortisol triggers the release of