Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

How to make the most of comprehensive biomarker testing for long-term health

Dec 02, 2025 · 12 min read

To make the most of comprehensive biomarker testing, interpret the 100+ lab results as a multi‑marker pattern (for example, LDL cholesterol, triglycerides, C‑reactive protein, and blood pressure together) to better predict your 10‑year cardiometabolic risk than any single “high” or “low” number. Here’s how to translate that pattern into concrete choices about food, movement, sleep, ...

Low cost longevity tips that actually work, according to research

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Dec 02, 2025 · 13 min read

Research shows that a small set of low-cost habits—regular movement (about 7,000–8,000 steps per day), not smoking, a mostly whole-food diet, maintaining a healthy weight, and keeping alcohol low to moderate—are linked to roughly 10–14 more years of life and a lower risk of “all-cause mortality.” These “boring,” repeatable basics outperform most gadgets and supplements, ...

How quickly does B12 shot work for energy and cognitive focus?

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Dec 01, 2025 · 13 min read

Vitamin B12 shots can quickly correct low B12 in people who cannot absorb pills, but the benefits, timing, and safe injection technique depend on your health, your dose, and exactly where and how the shot is given. “For the right patient, a B12 injection is like fixing a blocked fuel line. If you’ve been running ...

Finding the healthiest oat milk for your metabolism

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 30, 2025 · 15 min read

The healthiest option is an unsweetened, low‑oil, fortified oat milk with 0 g added sugar and about 90–120 calories per cup (typically 13–17 g carbs, 2–3 g protein, and 1–2 g fiber), because added sugars and enzyme‑converted starch can spike glucose while only a modest amount of cholesterol‑lowering beta‑glucan remains after straining. Here’s how to ...

Can i drink coffee while fasting? The metabolic rules you need to know

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 30, 2025 · 9 min read

Black coffee generally keeps a metabolic fast intact because it has about 2–5 calories per cup and does not trigger a significant insulin response, so fat burning can continue. The nuance is caffeine’s effect on cortisol and your goal (weight loss vs. strict “autophagy” rules), which can change what “allowed” really means. “From a hormonal ...