KDP categories · Top KDP authors
Endocrinology & Metabolism (Internal Medicine, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Endocrinology & Metabolism (Internal Medicine, Kindle eBooks), updated Nov 2, 2026: median price $9.99, median 48 reviews, average rating 4.5 and a KDPTop opportunity score of 25/100 (highly competitive).
| Price range (middle 50%) | $5.99 – $11.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 18% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 6% of the parent category Internal Medicine (776), one of the easier corners under it.
- 18% of its best sellers came out in the last 90 days, more than in 83% of Kindle eBooks categories: readers here keep buying new titles.
Top 10 Endocrinology & Metabolism best sellers
-
The Hunger Code: Resetting Your Body's Fat Thermostat in the Age of Ultra-Processed Food (Dr. Jason Fung Code Book 6)
- List rank#1
- Price$14.99
- Rating4.7
- Reviews649
-
The Ultimate Peptides Bible: A Complete Guide to Safe, Science-Backed Peptide Therapy for Weight Loss, Muscle Growth, Anti-Aging, Gut Health, Brain Fog, ... Longevity and Biohacking Handbooks)
by Tom Ralston
- List rank#2
- Price$9.99
- Rating4.4
- Reviews946
-
The Metabolic Scam: How Leptin, Light and Mitochondria Shatter the Weight Loss Lie
by Joshua Hackett MD
- List rank#3
- Price$9.99
- Rating4.5
- Reviews85
-
The Obesity Code: Unlocking the Secrets of Weight Loss (Why Intermittent Fasting Is the Key to Controlling Your Weight)
- List rank#4
- Price$9.99
- Rating4.6
- Reviews38,220
-
Estrogen Matters: Why Taking Hormones in Menopause Can Improve Women's Well-Being and Lengthen Their Lives -- Without Raising the Risk of Breast Cancer (2024 Revised and Updated Edition)
by Carol Tavris
- List rank#5
- Price$14.99
- Rating4.7
- Reviews1,186
-
The Ultimate GLP-1 Handbook: Semaglutide and Tirzepatide Guide to Losing Fat Not Muscle with Protein and Strength Training, Beating Side Effects and Plateaus, ... Longevity and Biohacking Handbooks)
by Tom Ralston
- List rank#6
- Price$4.99
- Rating4.8
- Reviews17
-
Rethinking Hypothyroidism: Why Treatment Must Change and What Patients Can Do
by Dr. Antonio C. Bianco MD M.D. Ph.D
- List rank#7
- Price$8.99
- Rating4.4
- Reviews138
-
Mastering Diabetes: The Revolutionary Method to Reverse Insulin Resistance Permanently in Type 1, Type 1.5, Type 2, Prediabetes, and Gestational Diabetes
by Cyrus Khambatta PhD
- List rank#8
- Price$10.99
- Rating4.6
- Reviews4,506
-
Cure Your Fatigue, Second Edition: The Root Cause and How to Fix It On Your Own
by Morley M. Robbins
- List rank#9
- Price$12.99
- Rating4.7
- Reviews1,052
-
Hashimoto’s Food Pharmacology: Nutrition Protocols and Healing Recipes to Take Charge of Your Thyroid Health
- List rank#10
- Price$21.99
- Rating4.6
- Reviews1,357
FAQ
Is Endocrinology & Metabolism a good niche for Amazon KDP?
Its KDPTop opportunity score is 25/100, which makes it highly competitive. The median best seller has 48 reviews and sells for $9.99.
How many reviews do you need to rank in Endocrinology & Metabolism?
The median best seller has 48 reviews, and 59% of them have fewer than 100.
What do Endocrinology & Metabolism best sellers cost?
The median price is $9.99; half of the best sellers are priced between $5.99 and $11.99.
Can new books break into Endocrinology & Metabolism?
18% 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.