Your body produces it when your skin is in the sun or when you eat vitamin-D-rich foods. It can be hard to notice a vitamin D deficiency because it sometimes yields no symptoms. One study found ...

Wearable devices must be both flexible and durable to remain unobtrusive during use, bending and stretching along with the body. At the same time, these devices require highly efficient power sources ...

Alaina has been vocal about her struggle with body image and an eating disorder in the past Terry Wyatt/Getty Pregnancy taught Lauren Alaina a thing or two about self-love. Now 22 weeks pregnant ...