Synthesis Writing. Although at its most basic level a synthesis involves combining two or more summaries, synthesis writing is more difficult than it might at first appear because this combining must be done in a meaningful way and the final essay must generally be thesis-driven.
1. Endocrine Diseases. The bodyâs endocrine system produces hormones that regulate metabolism, sexual function, reproduction, mood, and much more. Diabetes is an example of an endocrine disease that can cause men to experience impotence. Diabetes affects the bodyâs ability to utilize the hormone insulin.
Peyronie's disease can undermine a man's ability to have sex, and can also cause erectile dysfunction. Worrying about a curvature of the penis can cause stress and anxiety, which can lead to erectile dysfunction. However, a considerable number of adult males who have Peyronie's disease have satisfactory sex lives.