Also seen in South Asia, dhat is anxiety about the alleged loss of semen in urine. These men feel weak, fatigued, sexual dysfunction, listless, and sleepless, among other symptoms. The Indian doctor Narendra Wig coined the term in the 1960s. Dhat may have some cultural connection with Hinduism. Ancient Ayurvedic texts say that one drop of semen is formed from 40 drops of bone marrow.