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Category: Ask Dr. Sears

Videos and articles answering your nutritional and wellness-based questions

Is the Zone Diet Still Ahead of Its Time? The Science Behind Metabolic Control

  • Barry Sears
  • Estimated read time 6 min read
  • January 30, 2026

Key Takeaways Yes—the Zone Diet may still be ahead of its time. Unlike most diet trends that focus on eliminating a single nutrient, the Zone Diet…

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Categories: Ask Dr. Sears, Latest News, Metabolic Engineering®

GLP-1 Weight Loss Drugs: Risks, Rebound Weight Gain, and a Metabolic Engineering Alternative

  • Barry Sears
  • Estimated read time 7 min read
  • January 22, 2026

GLP-1 drugs restrict calorie intake, leading to rapid metabolic benefits.  So does Metabolic Engineering®. The critical question is whether those benefits can be sustained long-term without…

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Categories: Ask Dr. Sears, GLP-1 Drugs, Latest News

How Long Can Humans Fast? The Science of Fasting and Metabolism

  • Barry Sears
  • Estimated read time 5 min read
  • November 18, 2025

Key Takeaways The human body is surprisingly fragile. Most people can survive only about three minutes without oxygen and about three days without water. Beyond those…

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Categories: Ask Dr. Sears, Latest News

What Sugar Really Does to Your Body: Glucose, Fructose, and Metabolic Health

  • Barry Sears
  • Estimated read time 7 min read
  • July 22, 2025

Last year, the NY Times had an article entitled This Is Your Body on Sugar (1). I thought this might be a good time to add…

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Categories: Ask Dr. Sears, Latest News

Everything You Wanted to Know About HbA1c (But Didn’t Want to Google)

  • Barry Sears
  • Estimated read time 11 min read
  • June 13, 2025

Key Takeaways A major women’s magazine recently asked me some questions on HbA1c.  Here are my answers: Why is HbA1C an important metric for blood sugar…

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Categories: Ask Dr. Sears, Latest News

Not Just Protein: The Critical Role of Fiber in Fat Loss

  • Barry Sears
  • Estimated read time 1 min read
  • April 29, 2025

Protein gets all the hype—but are you overlooking the real secret to weight loss? In this video, Dr. Barry Sears breaks down the powerful combination of…

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Categories: Ask Dr. Sears, Healthspan, Zone Science

How Much Protein Should You Eat to Lose Weight?

  • Barry Sears
  • Estimated read time 1 min read
  • April 29, 2025

When it comes to weight loss, most people are asking the wrong question. It’s not “How much protein do I need to lose weight?” It’s “How…

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Categories: Ask Dr. Sears, Zone Science

Why Protein Balance—Not Supplements—Builds Real Muscle

  • Barry Sears
  • Estimated read time 1 min read
  • April 9, 2025

Think amino acid supplements are the key to building muscle? Not so fast. In this short, Dr. Barry Sears breaks down the truth about leucine, mTOR,…

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Categories: Ask Dr. Sears, Zone Science

Sleep, Creatine, and Your Metabolism

  • Barry Sears
  • Estimated read time 1 min read
  • April 9, 2025

Rough night’s sleep? Before you reach for a supplement, hear this. In this video, I’ll explain why creatine might help. But it’s no match for the…

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Categories: Ask Dr. Sears, Zone Science

GLP-1 Drugs vs. The Zone Diet: Which Reduces Inflammation Faster?

  • Barry Sears
  • Estimated read time 1 min read
  • March 25, 2025

Can the Zone Diet reduce inflammation faster than popular weight loss injections? The answer might surprise you. While GLP-1 drugs can lower inflammation by reducing calorie…

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Categories: Ask Dr. Sears, GLP-1 Drugs, Inflammation

Do Genetics Make You Gain Weight? The Truth About Fat Loss

  • Barry Sears
  • Estimated read time 1 min read
  • March 25, 2025

Many people believe weight gain is all about genetics—but the real answer lies in your epigenetics. In this video, I’ll explain why your diet, not your…

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Categories: Ask Dr. Sears, What Is AMPK?, Zone Science

How Many Calories Do I Cut To Activate AMPK?

  • Barry Sears
  • Estimated read time 1 min read
  • March 17, 2025

Want to slow aging and boost metabolism? Cutting calories is key, but how much is too much? In this video, I’ll explain the science behind calorie…

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Categories: aging, Ask Dr. Sears, Stages of Life
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