Yazen: the metabolic check behind Europe’s leading medical weight-loss programme

Yazen’s medical model is built on objective health data: without reliable lab values, treatment decisions cannot be grounded and progress cannot be measured. Building its own diagnostics setup, however, would have meant negotiating lab contracts, building kit logistics, creating compliance structures and developing a results integration – across several countries.

What Yazen needed was infrastructure that delivers at-home sample collection, accredited lab analysis and structured result delivery as one integrated service – under the Yazen brand, not under a third party’s.

The metabolic check is an integral part of Phase 1 “Connect” of the Yazen programme (€119, blood test included): an “examination of blood values to check hormone status, metabolic markers, minerals and vitamins” – before therapy begins, as the basis for the physician’s treatment plan (as stated on yazen.com).

Before starting a medication-based therapy, a medical review of the relevant blood values is standard practice – the home check makes this possible without a practice visit and delivers the values straight into the treatment process. Yazen cites “over 50,000 successful members” and “up to 15% weight loss in 6 months”, and was named “Europe’s weight-management programme of the year” in 2025 (figures according to Yazen).