Maca Powder Benefits Maca is a true adaptogen: it helps us adapt to all different types of stress. Maca contains hormone pre-cursors that help support endocrine system health, including the health of the hypothalamus (in the brain), the thyroid and the reproductive organs. It has also been shown to help with energy, mood, sleep, libido, and anxiety. It has an earthy, slightly nutty taste with a hint of butterscotch. Maca is a member of the cruciferous family.