The Guardian view on the carnivore diet: red meat for influencers, but bad news for health | Editorial
The carnivore diet prioritizes exclusive animal-based foods, induces ketosis, attracts social-media advocates, and raises health concerns due to high saturated fat and low fibre.
Marbling On Beef Is Delicious, But It Isn't Always Very Good For You. Here's Why - Tasting Table
The issue is that those fattier cuts are typically high in saturated fat, which isn't good for heart health. But quantity is worth thinking about here.