2026-04-08

Clocked

The evidence-backed answer to the most neglected health question on Earth: **when**.

Niche Explored

Chronomedicine / circadian health optimization — the science of WHEN to do everything (take medication, exercise, eat, sleep, get surgery) for optimal outcomes, backed by peer-reviewed research.

Why This Niche

Trend Signals

• 2017 Nobel Prize in Medicine awarded for circadian rhythm research — mainstreamed the concept
• Chronotherapy services market valued at $832.6M in 2024, projected to reach $1B by 2030 (4.3% CAGR)
• Huberman Lab podcast (circadian episodes among most popular) — 4.5M+ YouTube subscribers
• “Circadian rhythm” search interest has grown steadily since 2017 Nobel
• March 2026: Nature published “Dialling up the circadian clock to target ageing” — anti-aging + circadian = massive crossover
• March 2026: Nature Communications published synthetic chronogenetic circuits for programmed drug delivery
• March 2026: All of Us Research Program published exercise timing + cardiometabolic health study (massive dataset)
• 2025: Scientific Reports published RCT on morning vs evening exercise effects on sleep and cardiometabolic health
• Biohacking movement (millions of followers) obsessed with optimization — timing is the next frontier

Content Gap

• Huberman Lab covers timing but as scattered podcast episodes, not systematic data journalism
• Chronobiology.com exists but is basic explainer content, not data-driven or visually rich
• No dedicated, beautiful, automated site that systematically translates new chronobiology research into actionable timing advice
• Most health content answers “WHAT to do” — very little answers “WHEN to do it” with real data
• Existing circadian content is either: academic papers, basic blog posts, or influencer opinions

Existing Competition

• Chronobiology.com — Generic explainer content, not data-driven, no regular updates, dated design
• Huberman Lab — Podcast format, scattered episodes, not a searchable reference, not automated
• OnTime Health — App-focused, not content-focused, limited free content
• Various Substack newsletters — Individual voices like Victor’s “24-Hour Hormone Clock” — good engagement but not systematic or data-backed
• Biohacking blogs — Cover timing as one of many topics, not specialist, often anecdotal
• Gap: No one is doing what Retraction Watch does for retractions, but for chronobiology — systematically tracking every new study on timing, scoring the evidence, and presenting it beautifully

Data Sources Found

Primary Research Sources

• PubMed E-utilities API — Free, no key required (3 requests/sec), 35M+ papers. Search terms: “chronotherapy”, “circadian”, “time-of-day”, “chronopharmacology”, “chronomedicine”. Can auto-fetch new studies weekly.

  • URL: https://eutils.ncbi.nlm.nih.gov/entrez/eutils/
  • Rate limit: 3 req/sec without key, 10/sec with free API key

• ClinicalTrials.gov API v2 — Free, returns JSON. Search active chronotherapy/circadian trials globally.

  • URL: https://clinicaltrials.gov/api/v2/
  • Can track which timing-based trials are recruiting, completed, or published results

• CrossRef API — Free, track citations of key chronomedicine papers, identify trending research

  • URL: https://api.crossref.org/

• Europe PMC API — Free alternative/complement to PubMed with full-text search

  • URL: https://europepmc.org/RestfulWebService

Supporting Data Sources

• Sunrise-Sunset API — Free, no key. Location-based sunrise/sunset/twilight times for personalized timing recommendations

  • URL: https://api.sunrise-sunset.org/

• Open-Meteo API — Free, no key. Weather, UV index, daylight data for light exposure context

  • URL: https://open-meteo.com/

• OpenAlex API — Free scholarly data API. Track citation counts, trending papers, author networks in chronobiology

  • URL: https://api.openalex.org/

SEO Analysis

• “best time to take blood pressure medication” — high search volume, contested medical advice
• “best time to exercise” — extremely high volume, evergreen, always debated
• “when to take statins” — high volume, medical professionals search too
• “circadian rhythm” — steady high interest since 2017
• “chronomedicine” — growing but still low competition
• “best time for surgery” — emerging topic with real evidence
• “circadian diet” / “time-restricted eating” — massive and growing (intermittent fasting adjacent)
• Key opportunity: Long-tail phrases like “best time to take [specific drug]” are highly searched, poorly served, and monetizable

Communities

• r/Biohacking (1.2M+ members)
• r/sleep (large community)
• r/intermittentfasting (huge — timing is core)
• r/Nootropics (timing-obsessed)
• Huberman Lab community
• Biohacker Summit attendees
• Quantified Self community
• Longevity/anti-aging communities

Image/Graphic Feasibility

• Excellent. Circadian clock visualizations are inherently beautiful — 24-hour circular charts, body temperature curves, hormone level graphs, day/night gradient backgrounds
• Can auto-generate: circular clock infographics showing optimal timing windows, body system activity charts, evidence strength meters, before/after timing comparison graphs
• Color palette naturally maps to warm (daytime) → cool (nighttime) gradients
• Data visualization opportunity is massive — every article can have custom charts

Revenue Signals

• Huberman Lab makes millions from supplements (many timing-related: morning stack, evening stack)
• Sleep supplements market: $2.8B+
• Light therapy lamp market growing rapidly
• Circadian-related wearables (Oura Ring, WHOOP) — affiliate goldmine
• Chronotype assessment tools — monetizable
• Health-conscious audience has demonstrated willingness to pay (Examine.com subscribers, Huberman premium, etc.)

Sources

• https://www.nature.com/articles/d41573-026-00057-x (Nature 2026 — circadian + ageing)
• https://www.nature.com/articles/s41467-025-56584-5 (Nature Comms — synthetic chronogenetic circuits)
• https://www.nature.com/articles/s41598-025-02659-8 (morning vs evening exercise RCT)
• https://www.medrxiv.org/content/10.64898/2026.03.16.26348509v1.full (All of Us exercise timing)
• https://link.springer.com/article/10.1007/s00210-025-03788-7 (chronopharmacology clinical impact)
• https://www.pnas.org/doi/10.1073/pnas.1916118116 (PNAS chronotherapy drug delivery)
• https://dev.to/0012303/pubmed-has-a-free-api-search-35m-medical-papers-without-scraping-no-key-2me
• https://dev.to/avabuildsdata/how-to-search-clinicaltrialsgov-programmatically-the-v2-api-is-actually-good-now-2i2a
• https://openpr.com/news/4080578/chronotherapy-services-market-to-reach-usd-1-3-billion-by-2034