Why Yo-Yo Dieters Lose Slower on Keto
If you’ve been on and off diets for years, you might find that the ketogenic diet doesn’t deliver the rapid weight loss you’ve heard about. This is because repeated cycles of weight loss and gain, often called yo-yo dieting, can affect your metabolism and body composition. A ketogenic diet, high in fats and very low in carbohydrates, shifts the body into a state of ketosis, where it burns fat for fuel.
The Impact of Yo-Yo Dieting on Metabolism
Yo-yo dieting can lead to a decrease in your resting metabolic rate (RMR), the number of calories your body burns at rest. Each time you lose weight, you may lose some muscle mass along with fat. Muscle burns more calories than fat, so losing muscle reduces your RMR. When you regain weight, it’s often primarily fat, further decreasing the muscle-to-fat ratio. This makes it progressively harder to lose weight with each subsequent diet. Understanding the keto adaptation timeline can help manage expectations.
Hormonal Changes and Appetite
Repeated dieting can also disrupt hormones that regulate appetite and satiety. Studies show that after weight loss, levels of appetite-stimulating hormones like ghrelin can increase, while levels of satiety hormones like leptin can decrease [5. Sumithran P, Prendergast LA, Delbridge E, et al. (2013). “Ketosis and appetite-mediating nutrients and hormones after weight loss”. European Journal of Clinical Nutrition. DOI: 10.1038/ejcn.2013.90.]. This hormonal imbalance can make it harder to stick to any diet, including a ketogenic one, as you may experience increased hunger and cravings.
Insulin Resistance and Metabolic Syndrome
Yo-yo dieting is associated with an increased risk of insulin resistance and metabolic syndrome. Insulin resistance means your body’s cells don’t respond as effectively to insulin, a hormone that helps regulate blood sugar. This can lead to higher blood sugar levels and an increased risk of type 2 diabetes. Metabolic syndrome is a cluster of conditions, including high blood pressure, high blood sugar, unhealthy cholesterol levels, and excess abdominal fat, that increase your risk of heart disease, stroke, and type 2 diabetes [4. Hyde PN, Sapper TN, Crabtree CD, et al. (2019). “Dietary carbohydrate restriction improves metabolic syndrome independent of weight loss”. JCI Insight. DOI: 10.1172/jci.insight.128308.].
What This Means in Practice
If you’re a yo-yo dieter starting a ketogenic diet, be patient and focus on long-term lifestyle changes rather than rapid weight loss. Prioritise whole, unprocessed foods, adequate protein intake, and regular exercise to help preserve muscle mass and improve insulin sensitivity. Consider consulting a registered dietitian or healthcare professional for personalised guidance. Buy a decent kitchen scale for about £15 at Argos to accurately measure your portions. Also, be aware of common keto electrolyte mistakes during the early stages.
Frequently Asked Questions
Will keto work for me if I’ve yo-yo dieted?
Yes, keto can still work, but it might take longer to see results compared to someone who hasn’t dieted repeatedly. Focus on consistency and overall health improvements.
How can I speed up my metabolism after yo-yo dieting?
Building muscle through strength training is key. Also, ensure you’re eating enough protein and getting adequate sleep.
What if I’m always hungry on keto?
Ensure you’re eating enough healthy fats and protein. These macronutrients are more satiating than carbohydrates. Also, drink plenty of water.
Should I track my macros strictly?
Tracking macros can be helpful, especially in the beginning, to ensure you’re staying within the ketogenic range. However, focus on whole foods rather than obsessing over numbers.
The Bottom Line
Yo-yo dieting can make weight loss on any diet, including keto, more challenging due to metabolic adaptations, hormonal imbalances, and increased risk of insulin resistance. Focus on sustainable lifestyle changes, prioritise whole foods, and be patient with the process. Remember that overall health is more important than rapid weight loss. If you’d rather not do the macro maths yourself, the automatic macro tracker in the Keto Dieting app does it for you on Google Play and the App Store.
References
- Sumithran P, Prendergast LA, Delbridge E, et al. (2013). Ketosis and appetite-mediating nutrients and hormones after weight loss. European Journal of Clinical Nutrition. https://doi.org/10.1038/ejcn.2013.90
- Hyde PN, Sapper TN, Crabtree CD, et al. (2019). Dietary carbohydrate restriction improves metabolic syndrome independent of weight loss. JCI Insight. https://doi.org/10.1172/jci.insight.128308
