DR. SUMAIYA'S HEALTH LIBRARY
Practical nutrition advice from Dr. Sumaiya Petiwala, physician & registered dietitian.
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Healthy eating on vacation relies on smart plate balance rather than strict dieting. Start every morning with 20 grams of protein. Follow the fiber-first eating order…
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Nuts and seeds deliver concentrated doses of magnesium, plant omega-3s, vitamin E, and soluble fiber. A daily portion of 15 to 30 grams supports blood sugar…
Clinical Nutrition
Dr. Sumaiya Petiwala, RD, BUMS, CDE · Medical Doctor & Registered Clinical Dietitian · Clinical Patient Handout · Updated 20 October 2026
Clinical Nutrition
Yes. Gut microbes ferment some carbohydrates that human enzymes do not fully digest, producing short-chain fatty acids that the body can use. A 2026 mathematical model…
Clinical Nutrition
Dr. Sumaiya Petiwala, RD, BUMS, CDE · Medical Doctor & Registered Clinical Dietitian · Clinical Patient Handout · Updated 20 October 2026
Blood Sugar Control
In a landmark 2026 Cambridge University study testing 39 commercial sweeteners across 25 gut bacterial species, nearly 75% directly inhibited beneficial gut microbes. Furthermore, combining sweeteners…
Clinical Nutrition
Hypothyroidism slows gastrointestinal transit by suppressing the Migrating Motor Complex (MMC), the small intestine's cleansing motility wave. Inadequate clearing allows bacteria like Klebsiella to migrate from…
Clinical Nutrition
Diwali blood sugar spikes stem from dense saturated fats in commercial sweets, maltitol sugar alcohols, and high-glycemic fasting starches like sabudana. Control postprandial glucose by eating…
Clinical Nutrition
Polished white rice and refined wheat digest rapidly, triggering acute postprandial insulin surges. In South Asians carrying diabetes-linked genetic variants, surplus carbohydrates activate hepatic de novo…
Featured Clinical GuideDr. Sumaiya Petiwala, RD, BUMS, CDE · Medical Doctor & Registered Clinical Dietitian · Clinical Patient Handout · Updated 20 October 2026
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