Most men focus on body weight, workouts, or body fat… but those numbers don't tell the full story.

In this episode of Healthy AF, Zane breaks down the five blood markers every man over 40 should be tracking if they want to stay strong, energized, and metabolically healthy for decades to come.

These biomarkers can reveal problems years before symptoms appear and help you catch issues related to metabolic dysfunction, heart disease, inflammation, testosterone decline, and prostate health early.

You'll learn why markers like fasting insulin and fasting glucose often reveal metabolic issues long before diabetes develops, how free testosterone reflects metabolic stress, and why inflammation markers like hs-CRP matter for long-term health.

Zane also explains how lifestyle factors such as poor sleep, chronic stress, excessive fasting, overtraining, and ultra-processed foods can quietly push these numbers in the wrong direction.

If you're over 40 and serious about longevity, performance, and metabolic health, these are the numbers you need to know.

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00:00 – 5 Blood Markers Every Man Over 40 Should Know
00:55 – Why Body Weight and Workouts Aren't Enough
01:40 – Marker #1: Fasting Insulin (Earliest Warning Sign)
02:50 – Ideal Fasting Insulin Range
04:00 – What Causes Insulin Resistance
05:05 – Marker #2: Fasting Glucose
06:00 – Why Chronically High Glucose Damages Blood Vessels
07:20 – Low-Carb, Fasting, and Elevated Blood Sugar
08:25 – Ideal Blood Sugar Range
09:15 – Stress Hormones and the "Dawn Effect"
11:00 – Marker #3: Free Testosterone
12:00 – Stress, Fasting, and Testosterone Suppression
13:20 – Ideal Free Testosterone Range
14:10 – Marker #4: hs-CRP (Inflammation Marker)
15:00 – What Drives Chronic Inflammation
15:40 – Visceral Fat, Diet, and Alcohol Effects
16:00 – Marker #5: PSA (Prostate Health)
17:00 – Testosterone and Prostate Cancer Myths
18:20 – Why You Should Start Tracking These Markers Early
19:10 – Why "Normal" Lab Ranges Aren't Optimal