Spoiler Alert: Maybe. But It’s Too Soon to Know Could a treatment for hot flashes also help protect against Alzheimer’s disease? A new study raises that possibility. But the potential benefit remains unconfirmed: Researchers have not proved that estrogen prevents Alzheimer’s, and women should not start or change hormone therapy for that purpose based on these findings. The Stanford-led researchers found that women who reported taking estrogen-only menopause hormone therapy h