Answer: Mediterranean diet.
The Mediterranean diet has anti-inflammatory, antioxidant, and anti-atherosclerotic effects.
It benefits circulation and metabolism.
Hence, it has advantages in preventing cardiovascular / cerebrovascular / metabolic diseases, weight management, and extending lifespan, among others.
Male erectile function is an extension and outpost of cardiovascular and metabolic health.
Therefore, without a doubt, the Mediterranean diet is beneficial for male sexual function.
It can preserve and promote male sexual function and prevent erectile dysfunction.
Referenes:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6801699/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5510347/
https://www.medpartner.club/mediterranean-diet-introduction/