Knowledge Center · research_evidence
What is biostasis?
Biostasis is a research umbrella term for long-term preservation of biological state. Provably reversible human biostasis remains unavailable.
Checked 2026-08-29
A term without magic
Biostasis is useful as a broad term because it focuses on how well degradation of a biological system can be stopped or greatly slowed. The name alone says nothing about reversibility. Reversible preservation is possible for some systems and timescales; there is no demonstrated technology for long-term reversible preservation of a whole human.
Sources: Brain Sciences / PubMed · checked 2026-08-29
Reversible versus not reversible today
Contemporary research roadmaps distinguish provably reversible preservation from preservation that is not reversible by known means but aims to retain structure for hypothetical future methods. The latter should not be described as “suspended animation” in a way that implies waking is already technically achievable.
Sources: Brain Sciences / PubMed · checked 2026-08-29
What needs to be measured
A scientifically useful discussion of biostasis needs metrics: tissue structure, cellular integrity, injury distribution, functional recovery where possible, cryoprotectant delivery quality, and rewarming quality. The more complex the system, the less adequate any single metric becomes.
Sources: Brain Sciences / PubMed · Methods in Molecular Biology / PubMed · checked 2026-08-29
Why human biostasis remains open
A whole human is a heterogeneous system with organs of different size, perfusion properties, and sensitivity. Ischemic time, solution delivery, cooling/warming gradients, toxicity, and mechanical injury all have to be managed. Success in one organ does not solve these system-level problems.
Sources: Cryobiology / PubMed · Nature Communications / PubMed · checked 2026-08-29
How CWH uses the term
CWH uses biostasis as a neutral research context and does not substitute it for cryonics when discussing post-legal-death practice. This helps avoid the false impression that the current procedure is demonstrably reversible.
Sources: Brain Sciences / PubMed · Society for Cryobiology · checked 2026-08-29