Liquid crystals are substances that flow like a liquid but maintain some of the ordered structure of crystals. Liquid-crystal molecules tend to be elongated and to orient in specific directions ...

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 ...

I never dealt with pimples (or needed a face wash for acne) until the pandemic, when I, along with lots of others, developed maskne, triggered by wearing masks for many hours a day. Mine was a ...

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Body composition refers to the distribution of fat, muscle, bone, and other tissues that make up your body. It is often expressed as the percentage of total body weight that consists of fat and/or ...

The overall average body fat percentage in the United States is about 39.9% for women and 28.1% for men, so below these amounts would technically be “below average.” However, most people in the United ...

The body contains all the internal organs, body parts, bones and muscles that make up the human anatomy. Your fleshy body has evolved over millions of years, and this is the science changing the way ...