Obesity and Weight Gain

Obesity and weight gain are fundamentally endocrine problems, not simple matters of caloric excess or insufficient exercise. 2 Ray Peat argued that the standard dietetic advice—a high-starch, high-unsaturated-fat diet—blocks the ability to burn calories and shifts physiology toward fat storage rather than energy use. 10 He identified unsaturated fats and starches as the primary dietary causes of obesity, explaining that unsaturated fats suppress heat production and have a catabolic effect on muscle, while starches stimulate the enzymatic pathways that synthesize fat instead of accelerating sugar oxidation. 9 The cultural focus on weight itself is misplaced; Peat observed that when metabolism improves, a person can gain lean muscle mass while shrinking in circumference, so that pants become looser even though the scale shows the same weight. 1

The central hormonal mediator of pathological weight gain is cortisol. Chronically restricting carbohydrates upregulates the enzyme that produces cortisol, and elevated cortisol is now recognized as the primary driver of insulin resistance and central obesity. 5 Georgi Dinkov has emphasized that weight gain on a higher-sugar diet after a period of chronic stress is not caused by the sugar itself, but by the pre-existing cortisol dysregulation; people with a low metabolic rate from prolonged fasting and over-exercising can gain weight even on a thousand-calorie diet when they reintroduce carbohydrates. 5 Danny Roddy notes that when body temperature is extremely low—such as 93 degrees Fahrenheit—thyroid function is profoundly suppressed, and the person is on a slow trajectory toward weight gain because cells cannot perspire correctly and new fat is easily synthesized and stored. 2 Studies show that naturally lean individuals who stay lean with age actually eat more and move less, but maintain a much higher basal metabolic rate and higher levels of T3, reinforcing the classification of obesity as an endocrine disorder. 6

The goal should be body recomposition, not simply weight loss. Dinkov has written that losing pounds through grueling exercise and dieting typically lowers the metabolic rate, so that when the regimen stops, the person regains weight and often ends up heavier than before—a phenomenon demonstrated by contestants on The Biggest Loser. 4 Peat stressed that if someone is putting down fat rather than muscle, making their pants tighter, they are likely eating too much fat or total calories. 1 He also pointed to inadequate intake of calcium and sodium as factors that can cause someone to store fat instead of producing energy, recommending around 2,000 milligrams of calcium per day as a safe standard. 9 Emma Sgourakis, in conversation with Roddy, added that people often make dietary changes too quickly when they learn sugar may not be harmful, and that slow, gradual adjustments are essential; consistency over a year or more may be required to see solid, lasting results. 2

A counterintuitive finding in this framework is the obesity paradox. Roddy has observed that many obese individuals appear healthier than extremely lean, catabolic young people whose bodies are chewing through tissue, and that laying down fat can be protective because it sequesters toxins away from vital organs and prevents them from being oxidized by cells. 2 Dinkov has cited studies confirming that approximately 40 percent of obese and even morbidly obese people are metabolically healthy, with normal cholesterol, blood pressure, and inflammatory biomarkers, and that morbid obesity confers a three- to four-fold higher chance of surviving emergency cancer surgery or intensive care. 11 Peat himself noted that the problem is not weight per se, but the underlying diet that blocks calorie burning and forces the body into a storage mode. 10