Can a generally healthy adult seeking weight loss safely start a ketogenic diet, and what are the appropriate macronutrient ratios, contraindications (e.g., pregnancy, lactation, pancreatitis, uncontrolled liver disease, severe hyperlipidaemia, chronic kidney disease with estimated glomerular filtration rate <30 mL/min, eating disorders, type 1 diabetes), and required baseline and follow‑up monitoring?

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Last updated: February 7, 2026 • View editorial policy

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