Cynthia Sass is a nutritionist and registered dietitian with master's degrees in both nutrition science and public health. Frequently seen on national TV, she's Health's contributing nutrition editor ...

Vitamin D is an essential nutrient, particularly for children. From infancy to the school-aged years, vitamin D plays a critical role in your child’s growth, bone health, immune system, and even ...

The musculoskeletal system is an organ system comprising the bones, muscles and connective tissues (including cartilage, tendons and ligaments) that bind tissues and organs together. The main ...