The interpretation of this data points to variation in cycles from month to month stating that fertility may vary from "cycle to cycle." My take on this would be to realize that our women today are subjected to enormous physiologic stress which is causing the changes in the cycle length. 27-29 days are normal and
Here is more support for sleep disruption as a dramatic stressor in reproduction. We have noticed that physiologic stress patients that we term "hypothalamic dysfunction" seem to have a much greater chance of miscarriage as well as no pregnancy or infertility. This study makes the basic connection and is in no way proof of causation
Hypothalamic dysfunction in women is an epidemic following what I call the “exercise revolution” that began about 1980 and the dramatic change in athletics for women in U.S. schools about that time. Women now feel ashamed if they don’t engage in some high-level sport, where just a few years prior, they were not expected to
