Protein & Nutrition Blog – Marmels
Protein & Nutrition Blog – Marmels
Are Sugar Alcohols Bad for You? What the Research Shows
by Mo Mandegar, PhD
on Jun 16 2026
Sugar alcohols built a category on the promise of zero-calorie sweetness with no metabolic cost. Most cause gastrointestinal (GI) issues at modest doses, and 2023 to 2024 research has linked erythritol and xylitol to elevated cardiovascular risk. Here is what the science actually says.
Protein & Nutrition Blog – Marmels
Ingredients to Avoid in Protein Bars: A Buyer's Guide
by Mo Mandegar, PhD
on May 16 2026
Most popular protein bars are ultra-processed by design: built around sugar alcohols, refined oils, soy protein isolate, and a stack of emulsifiers that lets the bar survive a hot warehouse. This is a practical buyer's guide to the six ingredients to avoid in protein bars, the research behind each one, and what a cleaner ingredient panel actually looks like at retail.
