Clean & Lean 9-Day Programme in Marylebone, London

Most people lose 1-3 kg over the 9 days but that is largely water and gut-content shift, not fat loss in any meaningful sense. The reason to do Clean & Lean is the metabolic reset — insulin sensitivity, gut comfort, blood-sugar stability, and the eating patterns that drive the long-term. We tell every client at intake: this is not a weight programme.

Most medications are fine; some (insulin, sulfonylureas, anticoagulants, blood-pressure medication) need careful coordination with your prescribing GP because the dietary change can shift dosing requirements. We screen for these at intake and require GP coordination before starting if any are involved.

Most clients are not — the structure prioritises protein, fat, and fibre at every meal, which manages hunger far better than calorie-restriction approaches do. Days 2-3 sometimes carry mild adjustment effects (caffeine taper headaches, blood-sugar transition) but these settle quickly. If you feel persistently hungry through the 9 days, that is signal to adjust portion sizes — we tend to go up, not down.

Yes — anti-inflammatory, low-glycaemic structure is exactly what NICE recommends for PCOS, and aligns with the integrative fertility approach. Many fertility-pathway clients run Clean & Lean as the dietary starting block before joining the Fertility Perfected programme. We adjust the protocol for clients on metformin, letrozole, or hormonal contraception.