Internal Medicine — Kindle Category Opportunity
Competition snapshot for the Medical eBooks best-seller list, ease-of-entry score 36.0/100.
Category metrics
Score
36.0
Median reviews
971
Weak share (top 20)
10%
Median price
$10.45
Median star rating
4.6
Books scanned
50
Worth writing in?
Internal Medicine is heavily defended: incumbents are deep-reviewed and the top 20 rarely cracks. New releases can still chart with ads or a launch push, but expect to climb over established authors rather than around them. Ease-of-entry score 36.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 7 | Appetite on Pause: Weight Loss, Culture, and the Rise of GLP-1 Drugs | 4.5 | 4 | $0.99 |
High-frequency phrases in this category's titles
Mine all categoriesHigh-frequency phrases mined from the 50 best-seller titles on this category's list. The ease-of-entry score tells you how winnable the category is; these title phrases tell you which words readers search with — use the two layers together. Frequency is a title statistic, not a search-volume estimate.
| Phrase | Titles | Rank-weighted score |
|---|---|---|
| weight loss | 4 | 154 |
| gut health | 2 | 50 |
| step by step | 2 | 44 |
| kidney disease | 2 | 28 |
Sign in and click any phrase to send it straight to the keyword competition lookup.
More Medical eBooks categories
12 subcategories under this category
| Subcategory | Score | Median reviews |
|---|---|---|
| █████ | 81.5 | 6.5 |
| █████ | 73.5 | 20 |
| █████ | 66.5 | 21 |
| █████ | 64.5 | 18.5 |
| █████ | 61.5 | 20 |
| █████ | 55.5 | 48 |
| █████ | 51.0 | 35 |
| █████ | 43.5 | 113.5 |
| █████ | 41.0 | 125.5 |
| █████ | 37.5 | 380.5 |
| █████ | 11.0 | 665.5 |
| █████ | 8.5 | 246.5 |
Subcategory names are visible after sign-in — a free account unlocks every subcategory score.
Sign up free to unlockCheck the keywords before you write
Category scores show where entry is easiest; keyword lookups show whether readers actually reach for it. A free account includes keyword competition lookups plus unlimited category scans.
After you publish: why aren't readers buying?
Category research picks the direction; review diagnosis reads the readers. The same platform clusters a book's critical reviews into severity-ranked root causes, each anchored to verbatim quotes — see it applied to a full narrative-history title.
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Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.