Weight loss

Metformin over the counter: Why it requires a script and how to get one safely

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Dec 08, 2025 · 11 min read

Metformin is prescription-only in the U.S., Canada, and the U.K. because it alters mitochondrial energy metabolism and relies on kidney clearance, so reduced renal function can increase the risk of lactic acidosis (dangerously high blood acidity). If you’re pursuing it for weight management or longevity, here’s how clinicians evaluate labs and prescribe it safely through ...

Volume eating: How to lose weight by eating more food, not less

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Dec 02, 2025 · 12 min read

Volume eating can help you lose weight by centering meals on low–energy density foods (fewer calories per gram), letting you eat a similar volume, trigger fullness signals, and still reduce total calorie intake. Here’s how to use big, fiber- and water-rich portions without shortchanging protein, healthy fats, energy, or your relationship with food. “Volume eating ...

Red light therapy for weight loss: What really works and what’s hype

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 21, 2025 · 13 min read

Red and near‑infrared light therapy (photobiomodulation) may lead to small, body‑contouring reductions in waist, hip, or thigh measurements—typically measured in centimeters—by stimulating mitochondrial energy production and influencing how fat cells release stored fat, but it has not been shown to produce large or consistent drops in body weight or BMI. Here’s what the research really ...

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Metformin over the counter: Why it requires a script and how to get one safely

Volume eating: How to lose weight by eating more food, not less

Red light therapy for weight loss: What really works and what’s hype