Dr. Michael Greger is a physician, bestselling author of How Not to Die, and founder of nutritionfacts.org. In this episode, he joins Karena to break down the science of longevity — from why poor diet kills more Americans than cigarettes, to the truth about fasting, protein myths, and the three foods that could add years to your life. He also shares surprising research linking meat consumption to mood disorders and explains why just 21 days of dietary change can transform your body from the inside out.

What if the food on your plate is either slowly stealing your life or quietly giving it back to you?

Dr. Michael Greger makes one thing undeniably clear: you have far more power over your health destiny than anyone has ever told you.

(03:26) You Have More Control Over Your Lifespan Than You Think

• The vast majority of premature death and disability is preventable through diet and lifestyle. Genetics only account for about 25% of the difference in lifespan between people.
• Minimizing processed foods, meat, dairy, sugar, and eggs while maximizing fruits, vegetables, whole grains, beans, and legumes is your clearest path to a longer life.
• Real food that grows out of the ground is your most powerful longevity tool — at every stage of life, and only more so as you age.

(08:28) When You Eat Matters Just As Much As What You Eat

• If you're going to eat something indulgent, eat it in the morning. You'll experience a lower blood sugar spike and a lower triglyceride spike than if you ate it later in the day.
• Time-restricted feeding works best when you front-load your eating: make breakfast or lunch your biggest meal and stop eating before 7pm.
• Eating late at night and skipping the benefits of your morning physiology can actually make things worse, not better.

(12:30) You Don't Have to Change Forever — Just Give It 21 Days

• Lifelong dietary change feels overwhelming, but you don't have to commit forever. Commit to three weeks and let your own body show you what's possible.
• Within 21 days, patients routinely experience better digestion, better sleep, more energy, and less pain without a doctor wagging a finger at them.
• The most powerful motivator isn't external pressure — it's the moment your own body says this is the way to go.

(16:41) The Protein Myth That's Misleading Every Woman Over 40

• The recommendation of one gram of protein per pound of body weight is, in Dr. Greger's words, "ridiculous."
• Adding extra protein to the diets of older men and women has been shown to have zero effect on muscle mass, muscle performance, or muscle strength — with or without resistance exercise.
• Anyone who doesn't know how to get enough protein on a plant-based diet, as Dr. Greger puts it, simply doesn't know beans.

Guest Resources:

• nutritionfacts.org
• Books by Dr. Michael Greger

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