Why do I gain weight when I eat less protein?

Judy Caplan
Nutrition & Dietetics
Because when you eat less protein you are more likely to fill up on carbs. Protein helps keep your blood sugar stable and leads to less sweet cravings. Sweets and other carbs cause more fluctuations in blood sugar and lead to more sweet cravings and often a cycle of over eating and binging.
Jessica Crandall
Nutrition & Dietetics

Lean proteins are a great way to fill up on less calories, which leads to decreased portion sizes and thus weight loss. If you are eating less protein, you tend to eat more carbs. Carbs, especially those that are low in fiber, don't fill you up as much and you tend to want to eat more. Naturally, carbs hold onto some water which might also cause initial weight gain if transitioning from a high protein diet. Speak with your dietitian about appropriate amounts of protein and carbs for you specifically.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.