Finding health advice on social media is easier than knowing which claims to trust

In the corners of social media dominated by wellness content, influencers recommend an assortment of treatments and products to support weight loss, fight exhaustion or promote other desired health outcomes.

Some of the endorsed approaches may be helpful. Many play into fads with scant evidence to back up enthusiasts’ claims, medical experts say.

Some influencers encourage their followers to avoid specific food items, such as seed oils, while others advocate going all in on certain foods...