David Beckham uses his athletic experience to create IM8, a nutritional supplement brand offering benefits like better energy, digestion, and hair, skin and nail health.

The US's leading supplement expert recommended buying third-party-certified products. Health professionals can help you decide which supplements are right for you, Stefan Pasiakos said.

Dietary supplements ... company's health claims. Usually, if a product has been third-party verified, it will say so on the packaging or company website. Pasiakos recommends looking for products ...