Most replayed moment: Do you really need vitamin supplements? | David Seres

2026-08-04

Download

Today we’re talking about vitamins. Walk into any pharmacy or supermarket and you’ll find a shelf stacked with brightly coloured jars promising better immunity, stronger bones and sharper minds. Of course, I’m talking about vitamin supplements. But despite looking like medical products, supplements aren’t held to the same rigorous testing standards as medicines. So how much of what they promise is actually backed by science? I’m joined by Dr. David Seres to help cut through the confusion and uncover what the science really says about vitamin C, vitamin D...

Today we’re talking about vitamins.

Walk into any pharmacy or supermarket and you’ll find a shelf stacked with brightly coloured jars promising better immunity, stronger bones and sharper minds. Of course, I’m talking about vitamin supplements.

But despite looking like medical products, supplements aren’t held to the same rigorous testing standards as medicines. So how much of what they promise is actually backed by science?

I’m joined by Dr. David Seres to help cut through the confusion and uncover what the science really says about vitamin C, vitamin D, and even the mysterious multivitamins.

🌱 Try our science-backed and tasty wholefood supplement Daily30

Get our brand-new app and Gut Health Test designed by world-leading gut health and nutrition scientists to build healthy eating habits 👉 Join ZOE

Follow ZOE on Instagram.

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Good Mood Food (preorder) by Prof. Tim Spector

Free resources from ZOE

The Hormone Harmony Guide: Tuning Your Body’s Internal Orchestra

Eating for Better Brain Health: Your brain-gut blueprint