David Fredrickson (Fit Over 40)

@UChw8okCo93q1Y37arH2Ym3g - 44.6K subscribers

Welcome to Fit Over 40! I’m David Fredrickson, and I help you make sense of the confusing science behind healthy aging, belly fat, and longevity. We dig deep into intermittent fasting, metabolism, creatine, and mitochondrial health to give you practical tools that actually work. Whether you need honest supplement reviews, tips to reverse insulin resistance, or strategies for hormone balance (including menopause and cortisol), this channel breaks it all down simply. Join our community of men and women over 40 getting stronger and healthier every day. Subscribe for weekly science-backed health tips!

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1,000mg SHUTS DOWN Cellular Recovery (Nobody Is Talking About This)"

1,000mg SHUTS DOWN Cellular Recovery (Nobody Is Talking About This)" David Fredrickson (Fit Over 40)

5.4K views - 1 week ago

This Molecule Ends Inflammation (Your Body Stopped Making It)

This Molecule Ends Inflammation (Your Body Stopped Making It) David Fredrickson (Fit Over 40)

7.6K views - 1 week ago

Your Blood Sugar Gets WORSE On A Low Carb Diet (Science Proves It)

Your Blood Sugar Gets WORSE On A Low Carb Diet (Science Proves It) David Fredrickson (Fit Over 40)

571 views - 2 weeks ago

They Lost 10 Pounds But Only One Group Kept Their Muscle

They Lost 10 Pounds But Only One Group Kept Their Muscle David Fredrickson (Fit Over 40)

4.2K views - 3 weeks ago

Your AGE Decides If Intermittent Fasting Helps or Hurts (The Results Were Unexpected)

Your AGE Decides If Intermittent Fasting Helps or Hurts (The Results Were Unexpected) David Fredrickson (Fit Over 40)

6.3K views - 4 weeks ago

Spent Only $100 To Reverse Aging & Here's Her Exact Routine

Spent Only $100 To Reverse Aging & Here's Her Exact Routine David Fredrickson (Fit Over 40)

4K views - 1 month ago

117 Years Old And Her Body Broke Every Rule We Thought We Knew About Aging

117 Years Old And Her Body Broke Every Rule We Thought We Knew About Aging David Fredrickson (Fit Over 40)

3.5K views - 1 month ago

400mg STOPS Cortisol From Eating Your Muscle & Storing Belly Fat

400mg STOPS Cortisol From Eating Your Muscle & Storing Belly Fat David Fredrickson (Fit Over 40)

33K views - 1 month ago

High Cortisol = Tired But Wired? Eat This Instead

High Cortisol = Tired But Wired? Eat This Instead David Fredrickson (Fit Over 40)

806 views - 1 month ago

36 Hours Without Food — The Results Were Unexpected (Fasting Blood Sugar)

36 Hours Without Food — The Results Were Unexpected (Fasting Blood Sugar) David Fredrickson (Fit Over 40)

720 views - 1 month ago

Intermittent Fasting May Be STARVING Your Brain

Intermittent Fasting May Be STARVING Your Brain David Fredrickson (Fit Over 40)

525 views - 1 month ago

This Builds More Muscle and Gives You More Energy Than Creatine (And Nobody Is Talking About It)

This Builds More Muscle and Gives You More Energy Than Creatine (And Nobody Is Talking About It) David Fredrickson (Fit Over 40)

41K views - 1 month ago

High Cortisol Is DESTROYING Your Testosterone (Even on TRT)

High Cortisol Is DESTROYING Your Testosterone (Even on TRT) David Fredrickson (Fit Over 40)

1.5K views - 1 month ago

Will Creatine Make Me Gain Weight or Get Fat?

Will Creatine Make Me Gain Weight or Get Fat? David Fredrickson (Fit Over 40)

748 views - 1 month ago

One Switch Fights Four Deadly Diseases And Most People Have Never Heard Of It

One Switch Fights Four Deadly Diseases And Most People Have Never Heard Of It David Fredrickson (Fit Over 40)

2.6K views - 2 months ago

This UNDERRATED Extract POWERS Mitochondria, FIGHTS Inflammation & PROTECTS Testosterone

This UNDERRATED Extract POWERS Mitochondria, FIGHTS Inflammation & PROTECTS Testosterone David Fredrickson (Fit Over 40)

3.7K views - 2 months ago

This RESTORES Insulin Sensitivity, BUILDS Muscle & BURNS Fat (Proven In 2025)

This RESTORES Insulin Sensitivity, BUILDS Muscle & BURNS Fat (Proven In 2025) David Fredrickson (Fit Over 40)

16K views - 2 months ago

They Told You Mitochondria Are Just Powerhouses — That's a Lie That's Killing People Over 40

They Told You Mitochondria Are Just Powerhouses — That's a Lie That's Killing People Over 40 David Fredrickson (Fit Over 40)

1.3K views - 2 months ago

This FORGOTTEN Compound POWERS Mitochondria, INCREASES Insulin Sensitivity & Fat Burning

This FORGOTTEN Compound POWERS Mitochondria, INCREASES Insulin Sensitivity & Fat Burning David Fredrickson (Fit Over 40)

58K views - 2 months ago

This Antioxidant REBUILDS Muscle AND Grows New Mitochondria (Nobody Is Talking About This)

This Antioxidant REBUILDS Muscle AND Grows New Mitochondria (Nobody Is Talking About This) David Fredrickson (Fit Over 40)

18K views - 2 months ago

2g of This STOPS & REVERSES Metabolic Damage Already Destroying Your Body After 40

2g of This STOPS & REVERSES Metabolic Damage Already Destroying Your Body After 40 David Fredrickson (Fit Over 40)

9.2K views - 2 months ago

Scientists Found What's Causing You To Age Faster — And How To Reverse It

Scientists Found What's Causing You To Age Faster — And How To Reverse It David Fredrickson (Fit Over 40)

20K views - 3 months ago

1mg Of This Fat STOPS Cognitive Decline 7 Years Before Symptoms Start (Most Have Never Heard Of It)

1mg Of This Fat STOPS Cognitive Decline 7 Years Before Symptoms Start (Most Have Never Heard Of It) David Fredrickson (Fit Over 40)

2.7K views - 3 months ago

400mg FORCES Blood Vessels Open & POWERS Every System In Your Body (Science Proves It)

400mg FORCES Blood Vessels Open & POWERS Every System In Your Body (Science Proves It) David Fredrickson (Fit Over 40)

4.9K views - 3 months ago

1000mg FIXES Metabolic Aging & PROTECTS Your Mitochondria (But Everyone Got The Reason Wrong)

1000mg FIXES Metabolic Aging & PROTECTS Your Mitochondria (But Everyone Got The Reason Wrong) David Fredrickson (Fit Over 40)

11K views - 3 months ago

1000mg REVERSES Mitochondrial Damage & REGENERATES Immune Cells (New 2025 Study)

1000mg REVERSES Mitochondrial Damage & REGENERATES Immune Cells (New 2025 Study) David Fredrickson (Fit Over 40)

16K views - 3 months ago

500mg FORCES Trapped Fat Out by REPAIRING Your Body's Broken Drain (Nobody's Talking About It)

500mg FORCES Trapped Fat Out by REPAIRING Your Body's Broken Drain (Nobody's Talking About It) David Fredrickson (Fit Over 40)

20K views - 3 months ago

800mg REMOVES What's Quietly Building Up Inside You (Most Men Have No Idea)

800mg REMOVES What's Quietly Building Up Inside You (Most Men Have No Idea) David Fredrickson (Fit Over 40)

8K views - 3 months ago

5mg GROWS New Brain Cells & REVERSES Brain Aging (Why Nobody Is Talking About This)

5mg GROWS New Brain Cells & REVERSES Brain Aging (Why Nobody Is Talking About This) David Fredrickson (Fit Over 40)

5.9K views - 3 months ago

200mg of This Fat REBUILDS Cell Membranes & OUTPERFORMS Fish Oil (Science Proves It)

200mg of This Fat REBUILDS Cell Membranes & OUTPERFORMS Fish Oil (Science Proves It) David Fredrickson (Fit Over 40)

12K views - 4 months ago

Resveratrol Exposed: Why Peter Attia Rejects What David Sinclair Promotes

Resveratrol Exposed: Why Peter Attia Rejects What David Sinclair Promotes David Fredrickson (Fit Over 40)

3.8K views - 4 months ago

13g of This Combo FIXES Cellular Function & REBUILDS Mitochondria Power (Science Proves It)

13g of This Combo FIXES Cellular Function & REBUILDS Mitochondria Power (Science Proves It) David Fredrickson (Fit Over 40)

10K views - 4 months ago

30g REDUCES Cancer Growth 20%, CUTS Inflammation 40% & TURNS ON 200+ Protective Genes

30g REDUCES Cancer Growth 20%, CUTS Inflammation 40% & TURNS ON 200+ Protective Genes David Fredrickson (Fit Over 40)

8.1K views - 4 months ago

35mg FIXES Mitochondria Energy & BOOSTS Brain Power (BUT 500mg DESTROYS BOTH)

35mg FIXES Mitochondria Energy & BOOSTS Brain Power (BUT 500mg DESTROYS BOTH) David Fredrickson (Fit Over 40)

20K views - 4 months ago

This Hidden “Calorie Switch” REBUILDS Muscle & SHRINKS Belly Fat (Here's How To Activate It)

This Hidden “Calorie Switch” REBUILDS Muscle & SHRINKS Belly Fat (Here's How To Activate It) David Fredrickson (Fit Over 40)

8K views - 4 months ago

1,500mg REIGNITES Cellular Repair & REBUILDS Whole Body Strength (2 Day Protocol)

1,500mg REIGNITES Cellular Repair & REBUILDS Whole Body Strength (2 Day Protocol) David Fredrickson (Fit Over 40)

11K views - 4 months ago

25mg PROTECTS Mitochondrial Function & BOOSTS NAD⁺ Levels (Science Proves It)

25mg PROTECTS Mitochondrial Function & BOOSTS NAD⁺ Levels (Science Proves It) David Fredrickson (Fit Over 40)

11K views - 4 months ago

100mg RESTORES Mitochondria Energy & BOOSTS Dopamine Production (Science Proves It)

100mg RESTORES Mitochondria Energy & BOOSTS Dopamine Production (Science Proves It) David Fredrickson (Fit Over 40)

53K views - 5 months ago

20mg REBUILDS Mitochondria Power & RESTORES Peak Energy (Science Proves It)

20mg REBUILDS Mitochondria Power & RESTORES Peak Energy (Science Proves It) David Fredrickson (Fit Over 40)

143K views - 5 months ago

5mg RESTORES Energy Production & REVERSES Metabolic Shutdown (Just Like FASTING!)

5mg RESTORES Energy Production & REVERSES Metabolic Shutdown (Just Like FASTING!) David Fredrickson (Fit Over 40)

17K views - 5 months ago

500mg REVERSES Metabolic Damage & SHRINKS Visceral Fat (Without Exercise)

500mg REVERSES Metabolic Damage & SHRINKS Visceral Fat (Without Exercise) David Fredrickson (Fit Over 40)

54K views - 5 months ago

100mg RESTORES Mitochondria Power & REBUILDS Muscle Strength (Better Than NMN!)

100mg RESTORES Mitochondria Power & REBUILDS Muscle Strength (Better Than NMN!) David Fredrickson (Fit Over 40)

286K views - 5 months ago

1,500mg SHRINKS Belly Fat & FIXES Insulin Resistance (Science Proves It)

1,500mg SHRINKS Belly Fat & FIXES Insulin Resistance (Science Proves It) David Fredrickson (Fit Over 40)

74K views - 5 months ago

500mg of This FIXES Mitochondria Damage & Reboots Muscle Recovery (Science Proves It)

500mg of This FIXES Mitochondria Damage & Reboots Muscle Recovery (Science Proves It) David Fredrickson (Fit Over 40)

66K views - 5 months ago

Intermittent Fasting Works Better Than Dieting After Menopause (New Study)

Intermittent Fasting Works Better Than Dieting After Menopause (New Study) David Fredrickson (Fit Over 40)

379 views - 5 months ago

This Hidden Toxin Skyrocketed Insulin Resistance & Metabolic Damage!

This Hidden Toxin Skyrocketed Insulin Resistance & Metabolic Damage! David Fredrickson (Fit Over 40)

3.1K views - 5 months ago

Creatine Just Extended Your Life By 1.3 Years? Here's What The Science Says

Creatine Just Extended Your Life By 1.3 Years? Here's What The Science Says David Fredrickson (Fit Over 40)

1.2K views - 5 months ago

Only 3.000mgs Rescued Dying Dopamine Cells & Mitochondria Energy (New Parkinson's Study)

Only 3.000mgs Rescued Dying Dopamine Cells & Mitochondria Energy (New Parkinson's Study) David Fredrickson (Fit Over 40)

10K views - 6 months ago

Your Brain Has a Garbage Disposal System (Here's How to Keep It Working)

Your Brain Has a Garbage Disposal System (Here's How to Keep It Working) David Fredrickson (Fit Over 40)

806 views - 6 months ago

The Walking Trap That's Killing Your Strength Gains

The Walking Trap That's Killing Your Strength Gains David Fredrickson (Fit Over 40)

901 views - 6 months ago

Only 80 mg of This Improved Insulin Resistance Within Hours (But There's a Catch)

Only 80 mg of This Improved Insulin Resistance Within Hours (But There's a Catch) David Fredrickson (Fit Over 40)

6.9K views - 6 months ago

The #1 Fruit That Targets Oxidative Stress & Inflammation Simultaneously

The #1 Fruit That Targets Oxidative Stress & Inflammation Simultaneously David Fredrickson (Fit Over 40)

855 views - 6 months ago

Only 1 Cup Before Every Meal Helped People Lose 44% More Belly Fat (in 12 Weeks)

Only 1 Cup Before Every Meal Helped People Lose 44% More Belly Fat (in 12 Weeks) David Fredrickson (Fit Over 40)

2.5K views - 6 months ago

Your Fasting Routine is Missing This Hidden Fat Burning System

Your Fasting Routine is Missing This Hidden Fat Burning System David Fredrickson (Fit Over 40)

779 views - 6 months ago

This New Study Says Intermittent Fasting Doesn't Work?! (What's The Truth?)

This New Study Says Intermittent Fasting Doesn't Work?! (What's The Truth?) David Fredrickson (Fit Over 40)

1.3K views - 6 months ago

Only 3 Grams Of This Tea Reduced Body Fat In Only 12 Weeks (No Dieting!)

Only 3 Grams Of This Tea Reduced Body Fat In Only 12 Weeks (No Dieting!) David Fredrickson (Fit Over 40)

1.8K views - 6 months ago

You're Making this Intermittent Fasting Mistake! (It's NOT How Long You Fast)

You're Making this Intermittent Fasting Mistake! (It's NOT How Long You Fast) David Fredrickson (Fit Over 40)

2.1K views - 6 months ago

FIX Insulin Resistance FAST With This Simple Mealtime Routine (Most People Get This Wrong)

FIX Insulin Resistance FAST With This Simple Mealtime Routine (Most People Get This Wrong) David Fredrickson (Fit Over 40)

6.1K views - 6 months ago

Only 1 Scoop of This Stops Hidden Metabolic Damage (Almost Immediately)

Only 1 Scoop of This Stops Hidden Metabolic Damage (Almost Immediately) David Fredrickson (Fit Over 40)

58K views - 6 months ago

These 'Fasting Foods' Are Secretly Destroying Your Results! (Fix It Now!)

These 'Fasting Foods' Are Secretly Destroying Your Results! (Fix It Now!) David Fredrickson (Fit Over 40)

641 views - 7 months ago