One Of The Country's Best Doctors Says A High-Fat Diet Is Great For Weight Loss — UNLESS You're Eating This Food
Frank Lipman, M.D., one of the world's best doctors (and mbg Collective member!) stopped by our DUMBO office last week to chat with founder and CEO Jason Wachob about his incredible, comprehensive new book, How to Be Well, launching today. In between sharing health gems like the importance of free, easy things like listening to music or walking in nature, he mentioned a common fallacy around the fat-heavy diet craze that's been taking the health world by storm.
Lipman is mostly in favor of fat-based diets, as fats are particularly good for your mitochondria (which we talked to him about in-depth here!), although he cautions that every body is different, and no matter what diet a person chooses to pursue, they should pay attention to how it interacts with their particular physiology. His endorsement, however, comes with a big caveat: If you're going to eat a high-fat diet, you absolutely must be low-carb. "If you're going to eat a lot of fats, it's essential that you're low-carb at the same time," he told us. "If you want to put grass-fed butter or coconut oil into your coffee, that's fine, but don't drink it with a muffin."
We caught up with Frank to get more details about the assertion. "When you're eating high-fat and you're not eating carbs, your body is going to metabolize that fat and use that fat for energy. But if you're eating carbs with the fat, your body is going to use that sugar with the carbs for energy, so then you'll just store that fat." This is less about what you do in one day, Lipman notes, but about your general lifestyle: meaning, you can't just avoid pizza and bagels for 24 hours and feel free to stock up on healthy fat foods. "I would look at it as a habit. If you're in the habit of drinking Bulletproof coffee and eating a lot of fat, like I am, you need to get in the habit of being low-carb."
What does it mean to be low-carb or low-fat? When pressed for numbers, Lipman said he recommends staying below 50 grams of carbs if you're going to eat a lot of fat, which again, works for many people, but not for all—including Lipman's own wife, who he noted doesn't do well on a high-fat diet.
"There's no one way," he said. "Whoever tells you they have the answer to everything, don't believe them!"
Want more from Dr. Lipman's new book? Here, he discusses how to know if you're carbohydrate intolerant—and exactly what to do about it.