Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Gary Brecka gene test: What DNA methylation really tells you about your health

Nov 27, 2025 · 14 min read

DNA methylation tests measure methyl groups attached to cytosine at thousands of CpG sites and use algorithms (“epigenetic clocks”) to estimate biological age and population-level risk patterns, but they aren’t validated to diagnose disease or reliably tell you which supplements you “need.” Here’s how to read a Gary Brecka–style methylation report without overpaying for hype ...

Glutathione foods: Can you really eat your way to better antioxidant defense?

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 26, 2025 · 13 min read

Glutathione is often called the body’s “master antioxidant,” but simply loading up on glutathione foods is not the whole story. Here is how glutathione actually works, which foods matter most, and how to build a smarter plan for immunity, energy, and healthy aging. “Glutathione is less like a magic superfood and more like a workshop ...

Medicine 3.0: How prevention-based care can add healthy years to your life

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 25, 2025 · 15 min read

Medicine 3.0 adds healthy years by predicting 10–30 year risk and treating silent disease early — for example, a coronary artery calcium (CAC) CT scan can detect plaque burden, and a higher CAC score predicts future heart attacks and strokes beyond standard cholesterol tests. Here’s how to apply this prevention-first playbook to protect your testosterone, ...

Is Dave’s Killer Bread healthy? What the science says

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 25, 2025 · 8 min read

Dave’s Killer Bread can be a healthier swap for white bread because its fiber‑protein matrix (about 5 g fiber and 5 g protein per slice in “21 Whole Grains and Seeds”) slows glucose absorption and boosts satiety signals like GLP‑1, but it’s still calorie-dense and contains added sugar. Here’s how to decide whether it supports ...

Are Quest Bars healthy or just better junk food?

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 24, 2025 · 15 min read

Quest Bars are generally a healthier choice than candy bars because a typical bar has about 190 calories, 18–20 g of protein, ~13 g of fiber, and ~1 g of sugar, but they’re still ultra‑processed and work best as an occasional protein “gap‑filler,” not a daily meal replacement. Here’s how that label can help or ...