Choju Lab is an independent English-language publication covering Japanese longevity science, diet, fermentation, wellness travel, and the lived practices of one of the world's longest-living populations. We aim to go beyond the well-trodden Blue Zones narrative — sourcing from current research, multiple Japanese regions (not only Okinawa), and rigorous attention to what is actually evidence-based versus what is culturally appealing.

What we cover

• Longevity research — peer-reviewed studies from Japanese cohorts and labs, made accessible
• Regional profiles — Kyotango, Nagano, sub-regions of Okinawa, and other Japanese longevity hotspots
• Diet deep dives — the science of miso, koji, nori, green tea, fermented foods
• Supplement reviews — what the research actually shows, what the marketing overstates
• Wellness travel — onsen, ningen dock, forest bathing, traditional retreat formats
• Practices — hara hachi bu, moai, ikigai, with practical implementation guides for non-Japanese contexts

How we work

Articles are produced by the Choju Lab Editorial Team using AI-assisted research workflows. Source material includes peer-reviewed publications (PubMed indexed), Japanese government health statistics, regional public health programs, and reporting from Japanese-language sources translated for English readership.

We hold ourselves to a deliberately conservative standard on health claims. The Japanese longevity literature is rich but uneven; we distinguish between robust epidemiological findings, suggestive but preliminary research, and culturally appealing claims that lack evidence.

Important: not medical advice

Nothing on this Site is medical advice. We summarize research and report on practices; we do not prescribe. Consult a qualified healthcare professional before changing your diet, exercise routine, or supplement regimen. See our Medical Disclaimer for full terms.

Independence and conflicts

We accept affiliate revenue from retailers and travel platforms relevant to our coverage. See our Affiliate Disclosure for the list. Affiliate participation does not influence which research, foods, or practices we cover.

Get in touch

Tips, corrections, and feedback: editor [at] chojulab.com

For our editorial standards, see the Editorial Standards page.