The claim in which increased sexual content is considered desirable is made to seem scientific by reference to certain chemicals in chocolate that in theory might affect both sexuality and dreams. However, in this entire section of my webpage about the effect on dreams of food, herbs, medications, etc, I have not had time to investigate how much scientific research has been devoted to substantiating the claims. I suspect that most of the claims are highly speculative and therefore unreliable. I mention them solely on the remote chance that they might alert you to something that turns out to be of significance to you. Just pray that the Lord highlights to you anything you should seriously consider.