Phospholipid and fertility for men and women
Fertility for both men and women is also effected by having adequate but not too much cannabinoids/phospholipid. Most of the cannabinoid group of molecules do not cause euphoria as does THC, the cannabinoid that medical marijuana is known for containing. The cannabinoid that is most common within the body is more similar to the non-euphoria causing cannabinoid known by the initials CBD.
Political reasons may be the reason that medical research is being prevented by the Schedule 1 status of the marijuana /cannabis plant. Many medical advocacy groups have recommended that the plant be taken off the Scheduled list or have it changed to a lower rating that indicates medical benefit.
So a change in political environment seems necessary before the goal to help save the human race from extinction can be addressed directly with research into improving both the diet and nutrient guidelines for all age groups and address increasing infertility rates. Currently medical professionals can't really study or recommend cannabinoids for healthcare purposes due to the Federal designation of Schedule 1 controlled substance.
Additional note: The question of legalizing marijuana is seperate from changing the Schedule from I to III. Simply changing the rating would free academic and medical research teams or businesses to work with non-euphoria producing cannabinoids or the effect of dietary sources of phospholipids on the endogenous cannabinoid systems of the body and their effect on promoting health in certain types of chronic illness or substance abuse or binge eating disorders. Ironically a synthetic version of the euphoria producing cannabinoid known as THC is already considered a Schedule III drug (accessdata.fda.gov/Marinol/dronabinol.pdf) - with medical benefits - while the plant that contains a range of cannabinoids and terpenes that all have medical benefits is rated Schedule I - with no medical benefits.
It is past time for politics to get out of the way of health care research.
Disclosure: This information is being provided for the purpose of education within the guidelines of Fair Use. While I am a Registered Dietitian, the information is not intended to be used for the purpose of individualized healthcare guidance. Please seek an individual healthcare professional for the purpose of individualized healthcare guidance.