One of the most essential minerals in the diet, magnesium transports calcium and activates vitamin D, important factors in the strength and health of your bones and muscles. Magnesium offers cardiovascular support through its role in the healthy function of heart and vascular cells, and by promoting healthy blood pressure levels. Emerging science shows it may also support digestive health. Magnesium increases levels of GABA, a neurotransmitter that helps to calm a restless mind. It also soothes muscle fibers to promote physical relaxation. Adequate magnesium intake has also been associated with cognitive support, particularly learning and memory—important components of healthy aging—as well as the ability to promote a positive mental outlook.