The Habit Healers
Investor Due Diligence Report
substackHealth
Understand your health and choose your next step with Dr. Laurie Marbas’s clear explanations, practical guides, and printable tools for everyday habits.
Investor Due Diligence Report
Understand your health and choose your next step with Dr. Laurie Marbas’s clear explanations, practical guides, and printable tools for everyday habits.
106K
4.5K paid
+18.4%
+23.2%
net growth
Pricing
$15/mo
$150/yr annual option
$54K
4.5K paid subs
$54K/mo – $54K/mo(±0%)
3.0
24.0
0.03%
(comments + likes) / subscribers
Daily
7.7 posts/week
77/100
Consistent (~1.3d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Unbiased Science | 140K | +0.4% | $5/mo | substack |
| Neuroscience & Psychotherapy | 72K | +0.7% | $10/mo | substack |
| Healing The Source | 70K | N/A | $8/mo | substack |
| Due Diligence and Art | 60K | N/A | $8/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 22K | $13,117.5 | — |
| Mar 2026 | 53K | $30,027.15 | +128.9% |
| Apr 2026 | 56.5K | $32,006.7 | +6.6% |
| May 2026 | 61K | $34,558.65 | +8.0% |
| Jun 2026 | 66.5K | $37,671.08 | +9.0% |
| Jul 2026 | 69K | $39,090.15 |
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
106K subscribers — above the 1K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
90% of 20 similar-size peers in Health have paid tiers
Pricing position
$15/mo vs $5/mo category median (583 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $15 | $150 |
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 | 51/100 | 30% |
| Paid Subscriber Ratio | 100/100 | 25% |
| Growth Consistency | 23/100 | 15% |
| Publishing Consistency | 89/100 | 10% |
| 🌻 A Year of Mental Health |
| 58K |
| N/A |
| Free |
| substack |
| +3.8% |
| Aug 2026 | 72.5K | $41,069.7 | +5.1% |
| Sep 2026 | 78K | $44,182.13 | +7.6% |
| Oct 2026 | 79K | $44,754.53 | ~0% |
Revenue Model
Active paid subscription tier