Gut health

Articles on improving digestion, the microbiome, and the gut barrier to support energy, immunity, and overall well-being. Learn how diet, stress, sleep, and targeted supplements can influence hormones, inflammation, and performance for men.

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The essentials for gut health — then explore the latest posts below.

Healthy carbonated drinks: The science behind the switch for men

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Jan 13, 2026 · 9 min read

Switching from sugar-sweetened soda to low- or no-sugar functional carbonated drinks removes the liquid fructose hit that drives insulin resistance and visceral belly fat (which can suppress testosterone) and can add prebiotic fibers like inulin that feed beneficial gut bacteria such as Bifidobacteria. “Healthy” on the can isn’t a guarantee—here’s how the key ingredients actually ...

The worst foods for gut health and how they disrupt your entire system

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Dec 06, 2025 · 9 min read

Ultra-processed foods high in added sugar, artificial sweeteners/additives, and unhealthy fats can shift your microbiome toward dysbiosis in as little as 24 hours, erode the protective mucosal barrier, and let bacterial toxins leak into the bloodstream to fuel systemic inflammation. Here’s the clinical evidence for which foods do the most damage—and how to rebuild a ...