FASTING AFTER 40: The Complete Guide to Burning Fat and Sharpening Your Mind (After 40 Performance Series)

By Dustin Castenholz

Most health advice was written for a 30-year-old body. If you're over 40, you already know it doesn't work the way it used to.

The frustrating truth is that your biology has changed. Insulin sensitivity declines. Growth hormone drops. Cortisol becomes harder to regulate. The strategies that kept you lean and sharp a decade ago are now working against you - and no amount of willpower or calorie counting will fix a hormonal problem.

Fasting After 40 is a science-backed, practical guide to using intermittent fasting to work with your biology instead of fighting it. Inside you'll discover:

Why fasting is more powerful after 40 than at any other age - and the hormonal science behind itHow to burn stubborn visceral belly fat without starving yourself or destroying your metabolismThe truth about fasting and muscle loss - and the exact protein strategy to preserve lean massHow fasting triggers autophagy, your body's cellular repair system, to slow aging from the inside outA clear, progressive 30-day plan that takes you from beginner to fully adapted - without white-knuckling through hungerThe mental clarity effect: why your best thinking happens in a fasted state and how to use itHow to troubleshoot plateaus, manage social situations, and make fasting fit your real life

This isn't another diet book. It's a hormonal reset designed specifically for the metabolic reality of life after 40 - backed by research, built for sustainability, and focused on results that last.

• Format: Paperback
• Language: English
• ISBN: B0H1G3XFCF
• ISBN13: 9798196229466
• Release Date: May 2026
• Publisher: Independently published
• Length: 24 Pages
• Weight: 0.11 lbs.
• Dimensions: 9.0" x 0.1" x 6.0"