Nutrition and lifestyle

Nutrition advice for weight and metabolic health is unusually noisy — largely because studies comparing dietary patterns tend to find that adherence matters more than the specific approach. The pattern you can sustain generally outperforms the one that looks best on paper.

That said, some things are reasonably well established:

Protein requirements rise during weight loss. When you lose weight, some of it comes from muscle. Adequate protein alongside resistance training limits that — and preserving muscle matters for more than strength, since muscle is a major site of glucose disposal and therefore central to insulin sensitivity.

Whole dietary patterns beat single interventions. The Mediterranean pattern has the strongest evidence base for metabolic outcomes. Lower-carbohydrate approaches suit some people well. Neither is universally superior.

Ultra-processed foods appear to matter independently. Evidence suggests effects on energy intake and metabolic markers beyond what nutrient composition alone predicts.

Added sugar affects the liver specifically. Fructose is metabolised largely in the liver and, in excess, contributes directly to liver fat.

Appetite suppression creates its own nutritional risk. When appetite is reduced — by treatment or otherwise — total intake can fall below requirements for protein, fibre and micronutrients even while weight loss goes well. This is a common reason for dietitian involvement.

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