KDP categories · Top KDP authors
Cancer (Diseases & Physical Ailments, Books): Amazon KDP category data
Amazon Books Best Sellers data for Cancer (Diseases & Physical Ailments, Books), updated Nov 3, 2026: median price $15.99, median 450 reviews, average rating 4.6 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $11.29 – $19.09 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 11% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 19% of the parent category Diseases & Physical Ailments (2,378), one of the easier corners under it.
- Its review barrier is higher than in 75% of Books categories: the median best seller has 450 reviews, so new books need time to build up.
Top 10 Cancer best sellers
-
Eat to Beat Disease: The New Science of How Your Body Can Heal Itself
- List rank#1
- Price$17.12
- Rating4.6
- Reviews9,394
-
Fenbendazole & Ivermectin Protocols: A Practical Handbook for Cancer Patients and Caregivers, with Research-Based Treatment, Patient Experiences, and Step-by-Step Checklists
by Andrew Kerrington
- List rank#2
- Price$14.97
- Rating4.2
- Reviews767
-
The Immortal Life of Henrietta Lacks
- List rank#3
- Price$9.92
- Rating4.6
- Reviews31,544
-
The Emperor of All Maladies: A Biography of Cancer
- List rank#4
- Price$13.85
- Rating4.7
- Reviews9,938
-
Estrogen Matters: Why Taking Hormones in Menopause Can Improve and Lengthen Women's Lives -- Without Raising the Risk of Breast Cancer (2024 Revised and Updated Edition)
by Avrum Bluming
- List rank#5
- Price$17.91
- Rating4.7
- Reviews1,186
-
The Liver Cure: Natural Solutions for Liver Health to Target Symptoms of Fatty Liver Disease, Autoimmune Diseases, Diabetes, Inflammation, Stress & Fatigue, Skin Conditions, and Many More
- List rank#6
- Price$15.48
- Rating4.5
- Reviews1,224
-
Mortality
- List rank#7
- Price$1.99
- Rating4.5
- Reviews4,307
-
Cancer Is a Parasite: Kill it with the Safe, Over-the-Counter Antiparasitic Fenbendazole
by William F. Supple Jr.
- List rank#8
- Price$22.74
- Rating4.8
- Reviews192
-
One-Minute Prayers for Women with Cancer
by Niki Hardy
- List rank#9
- Price$9.31
- Rating4.8
- Reviews598
-
Radical Remission: Surviving Cancer Against All Odds ― A NYT Bestselling Health Guide on Nine Key Healing Factors
by Kelly A. Turner PhD
- List rank#10
- Price$9.24
- Rating4.7
- Reviews4,314
Subcategories
Same niche in Kindle eBooks: Cancer
FAQ
Is Cancer a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 450 reviews and sells for $15.99.
How many reviews do you need to rank in Cancer?
The median best seller has 450 reviews, and 26% of them have fewer than 100.
What do Cancer best sellers cost?
The median price is $15.99; half of the best sellers are priced between $11.29 and $19.09.
Can new books break into Cancer?
11% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.