Osteoporosis is a condition characterized by porous and brittle bones. It was first coined by Jean Georges Chretien Frederic Martin Lobstein in the 1830s to describe bones with abnormally large holes. Osteoporosis risk is higher in women, especially after menopause, and can be caused by low estrogen levels, family history, small body size, and not getting enough calcium and vitamin D from diet. While often asymptomatic, osteoporosis can lead to fractures, loss of height, and stooped posture. Maintaining adequate calcium and vitamin D intake through diet and regular weight-bearing exercise can help prevent osteoporosis.