Whose Health Advice Should You Trust?

Oct 15, 2026 | Digestive Health

If you spend even five minutes scrolling social media, you’ll find someone confidently explaining what to eat, how to exercise, what to avoid, or what’s harming your health. Some of it’s useful. A lot of it comes from people with no training in the subject. And it’s often downright contradictory. If you’ve ever been confused by what different influencers advise about food or fitness, it’s worth looking more closely at the source of that advice.

Why confident advice is so convincing

Confidence feels like expertise; simple rules are both easy to remember and easy to share. “Cut out this one food” or “do this one workout” fits in a caption, while “it depends on you” doesn’t. Real health advice, whether it’s about food or training, is rarely simple, because the right answer depends on your health history, your lifestyle, your medications, your lab work, your injuries, and increasingly your own biology. Advice that ignores all of that can sound wonderful and easy, and that’s exactly why it spreads. When a post seems designed to shock or stir up debate, pause and ask whether it’s meant to inform you or just get a reaction.

What a credential tells you

A credential tells you someone has met a standard and is accountable to it. A medical doctor has completed medical school, residency training, and licensing exams. A registered dietitian has completed an accredited degree, supervised practice, and a national exam. A physical therapist has completed a doctoral degree, clinical training, and a licensing exam. Each of these professionals has been trained in their field and answers to a licensing or credentialing body if they cross the line. That’s a very different thing from a stranger online saying, “I recommend you do this exercise” or “You must cut out this food.”

Training also teaches people how to weigh evidence. Someone who’s credentialed knows that one study proves very little, because a single study can be small, poorly designed, or impossible to repeat. They look at the whole body of research and ask whether the results hold up across many studies and many kinds of people. Someone chasing clicks will happily build an entire post around the one study that supports a dramatic claim. People trained to look for the full picture are far less likely to hand you something that sounds exciting but falls apart under scrutiny.

A credential isn’t a guarantee of good judgment, and I’d never ask you to trust anyone simply because of the letters after their name. It does give you a way to check. A credentialed professional can tell you where a recommendation comes from, and they’ll be honest about what’s still uncertain.

Questions worth asking anyone who gives you health advice

  • What training or credentials do you have, and how can I verify them?
  • Where does this recommendation come from, and does it rest on one study or many?
  • Does this advice change if I take medication, have an injury, or have a health condition?
  • Is anyone selling me something as part of this advice?

A good answer is specific, modest, and comfortable with the words “it depends.”

Why this matters even more with genomics

A genomic report isn’t a verdict, and reading one well takes training. The same result can mean different things depending on your diet, sleep, stress, and history. Interpreted carelessly, a report can create worry that doesn’t need to exist or false confidence that does harm. That’s why I go through results with you in a dedicated session and keep the focus on what you can do with the information.

If you’d like to talk about what a plan built for your own biology could look like, you can book a free 20-minute health strategy session at liveyourbest365.com/strategy-session.