Decreased estrogen brings decreased bone density
Osteoporosis is characterized by decreased bone density of normal bone. Lowered estrogen, often associated with menopause, can increase your risk.
Normally we think of calcium has the only one way to increase bone health and if you do take calcium supplements remember it is essential to also take Vitamin D, magnesium, and vitamin K for calcium to work.
But do you want to use herbs instead? Black Cohosh is a traditional herb for female hormonal balance of estrogens and osteoporosis. Alfalfa, Silica, and Horsetail are also known to slow down osteoporosis.