{ "title": "How Low-Carb Diets Work: The Science Behind Sustainable Fat Loss", "seo_description": "Discover exactly how low-carb diets work to trigger fat burning, balance hormones, and deliver lasting weight loss. Learn practical strategies tailored for beginners over 45 facing joint pain, diabetes, and hormonal shifts.", "topic_cluster": "low carb diet", "topic_pills": ["how low carb works", "ketosis explained", "hormonal weight loss", "beginner low carb tips"], "answer_html": "

The Core Mechanism: Shifting From Sugar to Fat Burning

When you reduce carbohydrate intake below 50-100 grams daily, your body exhausts its glycogen stores within 24-48 hours. This forces a metabolic switch where the liver begins producing ketones from stored fat. In my book, I call this the \"Fat-Burning Switch\" — a reliable process that bypasses the blood-sugar rollercoaster most dieters experience. For adults 45-54 managing diabetes or blood pressure, this switch often stabilizes glucose levels within two weeks, reducing medication needs under physician supervision.

Hormonal Changes That Make Weight Loss Possible Again

Insulin is the primary hormone driving fat storage. Low-carb eating lowers insulin secretion by 50% or more in most people, allowing lipolysis — the release of fatty acids from adipose tissue — to accelerate. At the same time, glucagon rises, signaling the liver to produce energy from fat rather than muscle. This is especially helpful during perimenopause and andropause when declining estrogen and testosterone make traditional calorie-cutting