My bf has a pituitary tumor that has caused him to gain weight and have mood swings is this all from the. tumor how do they treat it could he die?

Unlikely: Mood disorders and weight gain are common problems with or without pituitary disease. Pituitary tumors are rarely dangerous or deadly and are usually fairly easy to manage or even cure. His hormone levels need to be carefully monitored, and he needs good followup to monitor the growth of the tumor. His mood and overeating should be treated separately.

Low testosterone: In men, pituitary tumors often cause a decreased testosterone level. The anterior portion of the pituitary gland produces luteinizing hormone (lh), which stimulates the testes to produce testosterone. Thus, symptoms of low testosterone may be the only sign of a pituitary tumor. In adulthood, low testosterone may lead to decreased sexual function and desire, infertility, and erectile dysfunction.