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The Over-50
Fasting Field Manual

Evidence-based. No fluff. Built for adults who do hard things.

What changes in your body after 50 — and exactly how intermittent fasting works with those changes instead of against them.

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What's Inside

Five Sections. No Filler.

Section 01
The Biology — What Changes After 50
Why metabolism slows, why muscle disappears, and the hormonal shifts that make losing weight harder than it was at 35.
Section 02
Why IF Works Differently Than Dieting
Insulin, autophagy, growth hormone. The mechanisms that make fasting more effective than caloric restriction for older adults.
Section 03
The Over-50 Fasting Protocol
Which protocol to start with, what breaks a fast, protein targets, and exactly what to eat in your eating window.
Section 04
Your First Four Weeks
A progressive ramp from 12 hours to 16:8. The five most common mistakes — and how to avoid all of them.
Section 05
Tools, Tips & Next Steps
Why the clock matters more than most people realize, and how to track your fasting window with precision.
16:8
Best-evidence fasting protocol for 50+
3–8%
Muscle lost per decade without action
500%
GH increase during fasting window
10
Peer-reviewed citations inside

Who This Is For

Written for Adults 45–65

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