The most plentiful protein in your body is also one of the most useful. Collagen is found in your skin, muscles, bones, tendons and cartilage — and acts like glue to hold your body together and make your skin more flexible. As you age, your body produces less collagen protein, which can result in dry skin, wrinkles, joint pain and even tooth loss. The elasticity of your skin actually starts declining in your 20s.

So how can you restore collagen? When possible, it’s best to get essential vitamins and minerals through a balanced diet. Your body produces collagen naturally when you consume protein-rich foods — like beef, fish, chicken, eggs, dairy products, beans and nuts — combined with the nutrients you get from fruits and vegetables. In addition, healthy habits like getting enough sleep, wearing sunscreen, avoiding tobacco and controlling stress can lessen the decline of your body’s collagen.

When your body produces additional collagen, it can slow the aging process and help keep skin, hair, nails and bones in better shape. If you need more collagen, supplements are available. Studies show several potential health benefits with few side effects. Collagen supplements are usually made from fish scales or cow bones and are available in pill and powder form. Don’t let the ingredients alarm you! These supplements are virtually tasteless and can easily be added to foods and drinks like oatmeal, coffee or smoothies.

Our verdict: While side effects of collagen supplements are minimal, it’s important to check with your physician and dentist before taking these supplements.