People with excessive sexual fantasies and urges have different gene expressions that seem to affect how the “love hormone” oxytocin is regulated
Source:
https://www.newscientist.com/article/2217231-hypersexual-disorder-linked-to-genes-that-regulate-love-hormone/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home