IHHT — Intermittent Hypoxia-Hyperoxia Training

Insufficient evidence / under studyCgradePlausibility · Plausible, weakly establishedGas, Oxidative & Pressure

A representative frontier modality: the mechanism is real and unrefuted, the evidence is early — exactly the 'unproven is not disproven' tier the atlas keeps visible and separate.

Origin & lineage

Intermittent hypoxia-hyperoxia; derived from altitude-training physiology.

Claimed mechanism

Alternating hypoxic and hyperoxic breathing cycles drive HIF signalling and mitochondrial biogenesis (an altitude-training analog).

Plausibility

Plausible, weakly established — real, coherent physiology; large RCTs are lacking.

Evidence — grade C

Real mechanism with early / mixed human data; robust large RCTs absent.

Market

Makers: ReOxy; Hypoxico.
Models: ReOxy systems; Hypoxico generators.
Price: Clinic systems ~$10–50K; sessions ~$50–300.

Kernel — keep vs set aside

Keep — real substrate

Genuine frontier: a coherent hypoxia-hyperoxia mechanism worth studying for cardiometabolic, rehabilitation, and performance endpoints.

Set aside — claim

'Rejuvenation' / anti-aging claims are premature — not yet supported by large controlled trials.

Regulatory status by jurisdiction

Registration or clearance is a market-access fact, never proof of efficacy.

US — FDA	No FDA device clearance found; marketed as wellness.
EU — MDR	CE varies.
Russia	Not specified in source.
China — NMPA	Not specified in source.
Australia — TGA	Not specified in source.

Sources

No verified primary source available — claims carried as unverified; not fabricated.