What If You Stop Eating Fats for 30 Days: Debunking the Low-Fat Myth and the Rise of Processed Foods

This podcast episode challenges the widespread belief that dietary fat is inherently bad, arguing instead that cutting fat from the diet for 30 days would lead to significant health deterioration. The host posits that the modern "fat phobia" is a misconception, contrasting it with historical human and animal dietary patterns where fat was highly valued for its energy and nutrient density. The core argument is that the dramatic increase in chronic diseases like obesity and type 2 diabetes since the 1900s correlates not with fat consumption, but with the exponential rise of processed foods, sugar, and highly processed seed oils, while natural animal fats have decreased.

The episode delves into the two primary functions of fat in the body: providing essential fatty acids and serving as fuel. Essential fatty acids, such as Omega-3s (EPA, DHA) and Omega-6s (GLA, ALA), are crucial for brain development and function, nerve signal transmission, inflammation regulation, and cell membrane integrity. Without sufficient intake, individuals may experience cognitive issues like brain fog, mood swings, increased systemic inflammation, poor skin/hair/nail health, impaired recovery, and compromised brain and eye development, especially in children and during pregnancy. The second function highlights fat as the body's preferred, clean, and stable energy source, contrasting it with the short, fluctuating energy provided by carbohydrates, which can lead to blood sugar roller coasters and constant hunger.

The host meticulously outlines the negative consequences of a low-fat diet, which extend beyond energy and cognitive function. These include digestive issues like gallbladder problems and malabsorption of fat-soluble vitamins (A, D, E, K) due to reduced bile production. Hormonal imbalances, such as decreased estrogen, testosterone, and vitamin D, can arise from insufficient cholesterol intake, as these are all cholesterol-derived. Furthermore, a lack of dietary fat can disrupt appetite regulation by reducing satiety hormones like leptin and cholecystokinin (CCK), leading to increased hunger and cravings, often exacerbated by compensating with processed carbohydrates.

Finally, the episode emphasizes the critical role of fat in maintaining a healthy gut microbiome. Essential fatty acids promote microbial diversity, and certain fats provide food for bacteria that produce butyrate, vital for gut lining integrity. Reduced fat intake can lead to decreased microbial diversity, impaired gut barrier function (leaky gut), and an overgrowth of pathogenic, carb-loving bacteria. The practical recommendations are to eliminate processed foods, sugar, and seed oils, reduce starches, prioritize whole foods, and gradually increase the quality of food purchased, even suggesting allocating a larger percentage of disposable income to food for better health outcomes.

If you cut out fat from your diet for 30 days, you will probably see a worsening in a number of different things, such as your brain function, your mood, your energy, your skin condition, your inflammation, and also probably your hunger and your tissue repair.

Before the 1900s, fat was the best kind of food because it was the most energy-dense, it was the most nutrient-dense, it had the most calories, and therefore it helped us survive.

In the 1900s, they ate things like olive oil, they ate things like walnut oil or almond oil or sesame oil. They did not have hardly any seed oils because they didn't have the technology to extract oil from those.

The way that they get the oil out of this is through extreme processing. They use very high pressure, they use very high heat, they use chemicals to process and get that oil out. So they change and destroy and basically turn it into a synthetic product in the process.

DHA, for example, is the primary fatty building block in your brain. You cannot make a healthy brain without enough of the DHA especially, but also the EPA.

Fat acts as fuel. It is the best form of fuel. That's why we store energy as fat on the body. And it's the best fuel because it runs clean and it gives us stable energy.

If we don't eat enough fats and we don't release enough bile to digest fats, then we also will not be able to properly absorb the fat-soluble vitamins—the vitamins A, D, E, and K.

We're finding now, with all the research in the microbiome space, that the diversity and the amount of bacteria that you have might be the single most important factor in your health.