Sayer Ji's Substack
Investor Due Diligence Report
substackHealth
Investigative journalism on health, science, and power, sourced to the primary record. Founder of GreenMedInfo.com. Deplatformed in 2021; publishing here without intermediaries.
55K
3.7K paid
+0.9%
+1.9%
net growth
Pricing
$10/mo
$110/yr annual option
$31K
3.7K paid subs
$31K/mo – $31K/mo(±0%)
30.6
129.1
0.29%
(comments + likes) / subscribers
Daily
6.8 posts/week
83/100
Very Consistent (~1.5d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Your Local Epidemiologist | 416K | N/A | $6/mo | substack |
| Nedra Nuggets | 153K | -0.3% | $6.99/mo | substack |
| The Vajenda | 131K | N/A | $5/mo | substack |
| Sensible Medicine | 107K | N/A | $8/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Mar 2026 | 51K | $28,747.2 | — |
| Apr 2026 | 52K | $29,306.55 | ~0% |
| May 2026 | 52K | $29,306.55 | ~0% |
| Jun 2026 | 53K | $29,874.38 | ~0% |
| Jul 2026 | 54K | $30,433.73 | ~0% |
| Aug 2026 | 54K |
Platform Dependency
Hosted on substack subdomain
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Audience Concentration
Hit-driven — top post engagement 3x+ above average
Subscriber threshold
55K subscribers — above the 1K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 33 similar-size peers in Health have paid tiers
Pricing position
$10/mo vs $6/mo category median (677 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $10 | $110 |
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 55/100 | 30% |
| Paid Subscriber Ratio | 90/100 | 25% |
| Growth Consistency | 98/100 | 15% |
| Publishing Consistency | 76/100 | 10% |
| Dr. Jessica Knurick |
| 84K |
| +0.6% |
| $8/mo |
| substack |
| $30,433.73 |
| ~0% |
| Sep 2026 | 54K | $30,433.73 | ~0% |
| Oct 2026 | 55K | $31,001.55 | ~0% |
Revenue Model
Active paid subscription tier