Skinny Diets: The Keto Secret — MCT Oil

Medium-chain triglycerides have become the supplement of choice for keto dieters and biohackers. Here's what you actually need to know.

MCT oil has gone from niche supplement to mainstream wellness staple in about five years. You'll find it in bulletproof coffee, smoothie bars, and the cabinets of almost everyone who has experimented with ketogenic eating. But what does it actually do?

The Science (Simplified)

MCTs are a type of fat the body processes differently than long-chain triglycerides. Where LCTs go through the lymphatic system before entering the bloodstream, MCTs go directly to the liver, where they're rapidly converted to ketones — immediately usable as fuel by the brain and muscles.

"The appeal of MCT oil is that it gives you the metabolic benefits of ketosis without requiring you to be in strict ketosis 24/7."

Who It's For

MCT oil is most useful for people already eating a low-carbohydrate diet or using intermittent fasting. Adding it to a standard high-carbohydrate diet is unlikely to produce significant results and may simply add calories. For keto dieters, it can meaningfully extend the window of ketosis and support cognitive performance during the adaptation phase. Start with a small amount. The digestive adjustment period is real, and nobody needs to learn that lesson the hard way.