The ketogenic (keto) diet is a very low-carbohydrate, high-fat eating approach that shifts your body's primary fuel source from glucose to fat. By drastically reducing carbohydrate intake — typically to under 20-50 grams per day — your body enters a metabolic state called ketosis, where it breaks down fat into molecules called ketones for energy. This metabolic shift can produce significant weight loss, which is why keto has become one of the most popular dietary strategies in recent years.
The ketogenic diet promotes weight loss through several mechanisms. The primary driver is the caloric deficit created by eliminating most carbohydrate-rich foods, which tend to be calorie-dense and easy to overconsume. The high fat and moderate protein content promotes satiety, helping people eat less without feeling deprived. And ketosis itself may offer a modest metabolic advantage, though the research on this point is still evolving.
Many patients experience rapid initial weight loss on keto — often 5-10 pounds in the first week. It's important to understand that much of this early weight loss is water, not fat. Carbohydrates cause your body to retain water, and when carb intake drops dramatically, water weight follows. True fat loss takes longer and depends on maintaining a sustained caloric deficit.
At our clinics, we don't prescribe a specific diet for every patient — we build individualized nutrition plans based on each patient's metabolic profile, preferences, and clinical needs. For some patients, a ketogenic or low-carbohydrate approach may be appropriate as part of their plan. For others, a moderate-carb, high-protein approach produces better results and is more sustainable.
The key insight is that the specific dietary pattern matters less than the macronutrient targets it achieves — particularly adequate protein intake to prevent muscle loss. A keto diet that's high in fat but low in protein can actually accelerate muscle loss during weight loss, which is the opposite of what you want. This is why nutritional guidance from a clinical team matters more than choosing a named diet to follow.
Benefits: Keto can produce significant weight loss, particularly in the short term. Many patients report reduced hunger and more stable energy levels once adapted. The diet may also improve blood sugar control and triglyceride levels in some individuals, making it potentially beneficial for patients with type 2 diabetes or metabolic syndrome.
Limitations: Keto is restrictive and difficult to maintain long-term for many people. It eliminates or severely limits fruits, most grains, legumes, and many vegetables. Compliance tends to decline over months, and weight regain is common once patients return to a less restrictive eating pattern. The diet can also cause side effects during the adaptation period — sometimes called "keto flu" — including fatigue, headache, and digestive changes. Long-term cardiovascular effects of very high-fat diets remain an area of ongoing research.
We believe the best nutritional approach is the one you can sustain. For some patients, that's a ketogenic framework. For most, it's a balanced, protein-prioritized plan that can adapt as your body and goals change throughout the three phases of our program. Your provider and nutrition team help you find the approach that works for your body, your life, and your long-term health — not the approach that's trending on social media.