The ketogenic diet has become one of the most talked-about nutritional approaches of the modern era — praised by many as a breakthrough in health and weight management, and questioned by others for its strictness and sustainability. Yet beneath the trends and online debates lies a fascinating, science-backed way of eating that has been quietly transforming lives for nearly a century.

At its core, the keto diet is simple yet profound: it teaches your body to shift from burning carbohydrates for energy to burning fat. This metabolic transformation, known as ketosis, changes the way your body fuels itself. When carbohydrates are scarce, the liver converts fat into molecules called ketones, which become the body’s new energy source. The result can be steadier energy, reduced hunger, and an improved ability to access stored body fat — all while maintaining mental clarity and focus.

Tamsin Haleshenk unpacks the science and structure of keto with clarity and balance, exploring both its remarkable benefits and its realistic challenges. Listeners are guided through ten essential facts that explain what ketosis really is, how to achieve it, and what happens inside the body during this powerful metabolic shift. From understanding the correct macronutrient ratios — high fat, moderate protein, and very low carbohydrates — to identifying the difference between healthy and unhealthy fats, this book provides a complete overview of how to approach keto safely and effectively.

You’ll learn how the body adapts to fat as fuel, why the early days can bring symptoms like the “keto flu,” and how to manage these transitions with hydration and electrolyte balance. You’ll also discover the importance of choosing nutrient-dense, whole-food fats and proteins to support long-term health — and why “dirty keto,” based on processed foods, often undermines the diet’s true benefits.

While many people turn to keto for rapid weight loss, its impact goes far beyond the scales. Research suggests potential benefits for stabilising blood sugar, improving insulin sensitivity, supporting neurological health, and maintaining steady energy levels throughout the day. Yet keto is not suitable for everyone. Haleshenk carefully discusses medical considerations, including when professional guidance is essential — such as for those with diabetes, thyroid issues, or other underlying conditions.

What makes this guide unique is its emphasis on understanding the “why” behind the keto diet. Rather than promoting a one-size-fits-all plan, it encourages listeners to think critically, personalise their approach, and recognise that every body responds differently to carbohydrate restriction. Keto is not a trend — it is a metabolic tool, and like any tool, its success depends on how thoughtfully it’s used.

Written in an accessible yet scientifically grounded style, The Keto Diet Explained offers both newcomers and experienced followers a clear roadmap through the complexities of low-carb, high-fat nutrition. It balances biological explanation with practical insight, helping listeners navigate the transition to ketosis while maintaining perspective and balance in daily life.

By the end, listeners will understand not only how keto works but also why it works — and what it reveals about the incredible adaptability of the human body. Whether your goal is to manage weight, sharpen focus, or simply understand one of the most influential diets of the century, this book delivers the knowledge to make informed, sustainable choices.

Discover how to harness your body’s natural energy systems, redefine your relationship with food, and unlock the science of fat metabolism — with clarity, confidence, and care.