KDP categories · Top KDP authors
Digestive Organs (Diseases, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Digestive Organs (Diseases, Kindle eBooks), updated Nov 2, 2026: median price $6.17, median 11 reviews, average rating 4.3 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $9.99 |
|---|---|
| Average rating | 4.3 |
| New releases (90 days) | 8% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 3% of the parent category Diseases (368), one of the easier corners under it.
- Its review barrier is lower than in 81% of Kindle eBooks categories: the median best seller has only 11 reviews, so new books can chart with few.
Top 10 Digestive Organs best sellers
-
The Practical Food List for Kidney Disease Bible: A Science-Backed Guide to Enjoy Easy-To-Make, Tasty Meals, Eat Full Portions & Stick To a Flexible 28-Day Diet Plan Without Starving
by Mark D. Stanford
- List rank#1
- Price$12.99
- Rating4.4
- Reviews248
-
acid reflux and barrette's esophagus diet cookbook: Soothing Low-Acid Recipes to Calm Heartburn and Support GERD & LPR Relief
by leslie steward
- List rank#2
- Price$6.99
- Rating5.0
- Reviews4
-
Fix Your Gut, Fix Your Hormones: The Critical Connection Your Doctor Is Missing… And Why You Still Feel Terrible Despite “Normal” Labs
by Dr. Cassie Smith MD
- List rank#3
- Price$10.97
- Rating4.9
- Reviews25
-
The Gallstone Diet: Foods for Your Gallbladder – Prevent, Manage, and Flush your Gallstones
by Anna Keating
- List rank#4
- Price$2.99
- Rating3.9
- Reviews324
-
No gallbladder diet cookbook: Simple & Delicious Recipes | A Comprehensive 28-Day Meal Plan to Optimize Digestion and Embrace a Healthy, Vibrant Life After Biliary Surgery
by Eldric Simon
- List rank#5
- Price$4.99
- Rating4.6
- Reviews58
-
Acid Reflux Diet Cookbook: Manage GERD & LPR with 150 Easy Delicious Recipes. 56-Day Meal Plan for Heartburn Relief and Improved Digestion. Includes Vegan, Smoothie, and Gluten-Free Dessert Chapters
by Barbara Glisson
- List rank#6
- Price$3.99
- Rating4.0
- Reviews25
-
Gastrointestinal Pathology
by Shiv Dutt
- List rank#7
- Price$12.99
- Reviews-
-
The Power of the Vagus Nerve: Stimulate and Activate the Vagus Nerve Through Scientifically Proven Techniques to Reduce Your Anxiety, Alleviate Your Depression and Live a Healthier, Happier Life
by Richard Francis
- List rank#8
- Price$3.99
- Rating4.0
- Reviews133
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Healing Gallbladder Naturally: An Evidence-Based Guide to Dissolving Gallstones, Reversing Biliary Sludge, and Restoring Bile Flow with Herbal Medicine, Nutrition, and Functional Healing Protocols
by Dr.Ashish Srivastava et al.
- List rank#9
- Price$9.99
- Rating5.0
- Reviews1
-
The Gastritis Healing Cookbook: 125+ Delicious, Gastritis-Friendly Recipes to Soothe and Heal Your Stomach
by L.G. Capellan
- List rank#10
- Price$9.99
- Rating4.4
- Reviews66
FAQ
Is Digestive Organs a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 11 reviews and sells for $6.17.
How many reviews do you need to rank in Digestive Organs?
The median best seller has 11 reviews, and 90% of them have fewer than 100.
What do Digestive Organs best sellers cost?
The median price is $6.17; half of the best sellers are priced between $4.99 and $9.99.
Can new books break into Digestive Organs?
8% 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.