Contested Nutrition Claims — Kate Deering

This page tracks claims from Kate Deering's How to Heal Your Metabolism that are useful to understand but should not be treated as settled medical or nutritional consensus.

Claims to handle cautiously

• Health as high metabolism: useful lens, but reductionist if used alone.
• Pulse/temperature targets: practical signals, not definitive diagnostics.
• TSH scepticism: broader thyroid panels can matter, but TSH remains clinically useful.
• “Adrenal fatigue”: contested framing; HPA-axis issues and adrenal insufficiency are distinct clinical concepts.
• Saturated fat defence: evidence is context-dependent; ApoB/LDL, genetics, whole diet, and replacement nutrient matter.
• Broad PUFA toxicity: conflicts with many mainstream recommendations favouring unsaturated fats.
• Fruit juice/sugar as therapeutic: may not suit diabetes, insulin resistance, hypertriglyceridaemia, reflux, or dental risk.
• Grain/legume/nut avoidance: many population studies associate whole grains, legumes, and nuts with benefits, though individual tolerance varies.
• Raw milk: carries pathogen risk and is discouraged by public-health bodies for vulnerable groups.
• High salt: may be harmful in salt-sensitive hypertension, kidney disease, heart failure, and some cardiovascular contexts.
• Eggshell calcium: dosing, sanitation, kidney-stone risk, and total calcium intake matter.
• Exercise reduction: overtraining is real, but intense exercise is not inherently anti-metabolic for everyone.

How to use the framework safely

Treat the book as a hypothesis-generating model. Its strongest use is self-observation: energy, warmth, sleep, digestion, mood, appetite, training tolerance, and food tolerance. Its weakest use would be replacing medical evaluation for thyroid disease, diabetes, cardiovascular risk, kidney disease, eating disorders, pregnancy, or major symptoms.