JACKSONVILLE, Fla. — Hormone therapy use among women in the U.S. remains low, even though it's an effective treatment for many menopause symptoms, according to a new Mayo Clinic study published in Mayo Clinic Proceedings. Menopause affects more than 1 million women each year in the U.S., and up to 75% experience symptoms such as hot flashes and night sweats that can last for years. Yet ...