Deha. The body-composition scan, in-house.
Deha is the hotel's DEXA scan room — a dedicated clinical space housing a clinical-grade DEXA (Dual-energy X-ray Absorptiometry) scanner, staffed by a registered radiographer / DEXA operator, and integrated with the rest of Sama Clinic. Named after Sanskrit deha — body, the physical form the scan measures. Bringing DEXA in-house rather than referring it out is the deliberate change from earlier versions of this proposal: DEXA is the single most consequential body-composition measurement in longevity medicine, it produces the most immediately actionable baseline the guest leaves with, and running it inside the hotel — rather than sending guests across the road — is what lets the clinical team read the scan alongside the bloodwork within the same day. This page covers what the scan measures, why it is integral, how it fits the programmes, and the operational and regulatory pathway that stands the room up.
Body composition is a longevity variable — and DEXA is the reference standard for measuring it.
Every credible longevity programme in the market measures body composition. The reason is not vanity — it is that the ratio of lean mass to fat mass, the visceral-fat depot specifically, and bone-mineral density together produce a much better read on a person's physiological trajectory than weight or BMI alone. Sarcopenia (age-related loss of lean mass) and osteopenia / osteoporosis (age-related loss of bone density) are the two silent processes that most reliably shorten healthspan; measuring them is the first step to reversing them, and DEXA is the reference-standard measurement tool for both.
Earlier versions of this proposal referred DEXA out to the sister medical centre across the road. Bringing the scan in-house — inside Deha as a dedicated Sama Clinic stream — closes three specific loops that referred-out DEXA cannot:
Same-day clinical integration
A DEXA taken at Deha in the morning is available in the guest's clinical record for the Naya consultation with Dr Chande the same afternoon, alongside the Nidana bloodwork. The scan and the bloods are read side by side — a visceral-fat number next to an HbA1c, a lean-mass reading next to a testosterone, a bone-density T-score next to a vitamin D. Referred-out DEXA can't do this without introducing a day of lag; in-house DEXA turns the scan into a live part of the clinical conversation.
The comparison-scan use case works properly
Longer programmes rely on arrival + departure scans to evidence within-stay change (particularly the Long View at 10-14 nights). Bringing DEXA in-house makes those comparison scans an easy scheduling matter rather than two separate referred appointments across the road. It also means the same machine, same operator, same protocol produces the two data points — reducing the measurement noise that comparing across different machines and operators would introduce.
Membership and returning-guest longitudinal record
Long Club members and returning residential guests build up a multi-year DEXA record on the hotel's own machine. That longitudinal record is one of the strongest membership-retention hooks the clinical operation has — a member who is watching their own bone-density and lean-mass trend across five years on the same machine has a reason to stay a member. The referred-out model does not build that record inside the hotel's data infrastructure; the in-house model does.
Six clinically meaningful numbers, in one scan.
A DEXA scan produces, in a single ~10-minute session, the numbers a longevity conversation actually needs. Each of these has a specific clinical use and each is repeated across visits to build the longitudinal picture.
- Whole-body fat mass and body-fat percentage — the baseline body-composition read, more clinically meaningful than weight or BMI because it distinguishes fat from lean.
- Whole-body lean mass (and lean-mass index) — the sarcopenia read; the single most consequential number for later-life function and fall risk, and the target the Bala training programme moves.
- Regional lean and fat mass (arms, legs, trunk) — surfaces asymmetries, distinguishes central adiposity from peripheral, and shows which regions the training programme is moving.
- Visceral-fat quantification — the specific fat depot around the abdominal organs that carries the metabolic and cardiovascular risk. Cannot be reliably estimated from waist circumference alone; DEXA is the standard measurement route outside of full-body MRI.
- Bone-mineral density (hip, spine, forearm) — the T-score and Z-score for each site, giving the osteopenia / osteoporosis read. Especially consequential for the perimenopausal-and-postmenopausal female cohort the hotel is serving, where bone-density decline accelerates and needs a proper baseline early.
- Fracture risk assessment — the T-scores plug directly into the FRAX or Q-Fracture algorithms Dr Chande uses to give the guest a proper ten-year fracture-risk read.
Radiation dose, in context. A whole-body DEXA delivers around 1-5 μSv of ionising radiation — meaningfully less than a single day of natural background exposure in the UK (~10 μSv), and orders of magnitude less than a chest X-ray (~100 μSv) or a CT scan (up to 10,000 μSv). It is one of the safest imaging modalities available and is used routinely in longitudinal research and clinical monitoring for exactly this reason. Registration under the UK / Jersey Ionising Radiation Regulations (IRR-17 or Jersey equivalent) is a standard framework the room operates inside.
A layered inclusion — scaled by how much the guest is here to move.
- Long Weekend — one arrival scan. Guest leaves with a documented baseline they can benchmark future visits against.
- Long Pause — one arrival scan; comparison scan available at departure as an optional inclusion.
- Long Reset — arrival and departure scans as standard; the within-stay change on lean mass, visceral fat, and fat percentage becomes part of the take-home protocol.
- Long View — arrival, mid-stay, and departure scans across the fortnight; the trajectory across three data points is more informative than two, particularly for lean-mass changes on the Bala programme.
- Long Club Standard — one scan per year as a member benefit; longitudinal record accumulates across membership years.
- Long Club Plus — two scans per year (six-month cadence); the shorter interval matches the quarterly clinical-review rhythm and gives more granular tracking for members with a specific body-composition target.
A registered radiographer, working inside the standard IRR framework.
DEXA is ionising radiation. The room operates inside the standard regulatory framework for private imaging, which is straightforward to comply with but non-optional.
- DEXA operator / radiographer — HCPC-registered diagnostic radiographer (BSc Diagnostic Radiography) or equivalent, DEXA-trained. 0.5-1.0 FTE depending on programme volume. Runs every scan, ensures positioning and protocol consistency across visits (which is what makes comparison scans meaningful), and produces the initial report that Dr Chande and the medical team then interpret alongside the bloodwork.
- Ionising Radiation Regulations (IRR-17) registration — Jersey has its own IRR framework aligned to UK / EU standards. The room is registered, the machine is commissioned and quality-assured by a medical physics expert, and the operating protocols are documented before Phase 02 launch.
- Consultant radiologist reporting overhead — DEXA reports are algorithmic (the machine produces the numbers); consultant radiologist sign-off is required for the formal report where the finding is clinically significant (e.g. osteoporosis diagnosis). Handled via a service agreement with a Jersey radiology practice on an as-needed basis, not a full-time resource.
- Machine service and QC — annual calibration by the manufacturer or an accredited service provider, monthly QC scans by the operator, daily start-up QC. Standard for the modality.
A dedicated room, a refurbished clinical-grade machine, one operator.
The machine — refurbished clinical-grade DEXA
A refurbished Hologic Horizon (the current market standard for whole-body DEXA in the UK private sector) or a comparable GE Lunar iDXA. Refurbished from an accredited supplier with full recalibration and warranty. Capex range: £50,000-£80,000 for a refurbished clinical-grade machine, versus £100,000-£200,000 new — refurbished is the operationally-sensible route for the hotel's expected volume. Ten-to-fifteen year service life with proper maintenance.
The room — small, controlled, lead-considered
Approximately 20-25 sqm inside the Sama Clinic footprint. The dose is low enough that room shielding beyond standard construction is generally not required for DEXA (unlike CT or general X-ray), but the room is designed to IRR standards — controlled access, warning signage, appropriate ventilation, and the machine's own footprint clearance. Fit-out cost: £20,000-£40,000 including the shielding, the IRR registration process, the operator workstation, and the change / privacy area for guests.
Total capex commitment
~£70,000-£120,000 all-in for Deha at Phase 02 launch — machine plus room fit-out plus commissioning. Sits alongside the cryotherapy chamber (£53-90k) as one of the two main clinical-equipment capex lines in the Phase 02 plan. Machine depreciation is amortised over ten years; the operational cost thereafter is dominated by the radiographer's salary and the service contract, not by the equipment itself.
What guests see
An unfussy, well-lit clinical room. The DEXA machine is a low-profile flat scanning bed with a horizontal arm that moves across the body — not the enclosed tube a guest might associate with MRI or CT. The scan is silent, painless, and the guest lies still on their back fully clothed (metal removed) for ten minutes. The operator is present throughout. The written report and the visual body-composition map (regional distribution, colour-coded) is available to the guest within minutes of the scan finishing.
The body-composition picture, integrated across the clinical team.
- Nidana — the diagnostic-pathology stream Deha sits next to. DEXA + bloods together are the physiological baseline every programme is built around. Read side by side by Dr Chande in the Naya consultation.
- Kaya — Deha's lean-mass and regional numbers feed directly into the Kaya movement assessment, and the training programme Kaya writes for the guest targets specifically the regional lean-mass gains DEXA will re-measure at departure.
- Bala Gym — where the lean mass DEXA measures is actually built. The bidirectional loop between Deha's measurement and Bala's training is one of the strongest evidence loops the hotel can show a guest.
- Sama Clinic medical team — Dr Chande interprets the T-scores and FRAX output; Dr Prasanna reads the body-composition data through the classical Ayurvedic constitutional-type frame; the dietitian reads it against the nutrition picture. All in the case conference.
- Programmes — the arrival-and-departure comparison scan is the single most photographable before-and-after the programme produces (alongside the Kaya video-capture gait comparison and the guest's own bloodwork trend line).