Q&A: Food Noise, Aging on Low-Carb, Carnivore Microbiome & Keto Snacks

Can ketosis change symptoms of bulimia? Is low-carb eating safe in your 80s? And what really happens to digestion on a carnivore diet?

In this episode of Metabolic Mailbag, Dr. Bret Scher answers questions about ketogenic therapy for eating disorders, low-carb diets in older adults, carnivore diets and gut health, constipation on a ketogenic diet, and even a few easy keto movie-night snacks. He also looks at why being in ketosis may affect symptoms differently than simply eating low carb, what to consider when fasting later in life, and how to think about bowel habits and microbiome changes when fiber intake is very low.

He covers:

Whether intermittent fasting and low-carb eating are appropriate at age 81Why adequate protein remains important with fastingWhat current research suggests about ketogenic therapy and eating disordersFiber, bowel habits, and constipation on carnivore and ketogenic dietsWhat emerging research suggests about microbiome diversity on carnivoreMagnesium options for constipationSimple keto snack ideas for a movie night

As always, Dr. Scher emphasizes individual context, clinical guidance, and the importance of looking beyond a single number or dietary rule.

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Expert Featured:

Bret Scher, MD

https://www.instagram.com/drscher858/?hl=enhttps://www.linkedin.com/in/bret-scher-08baaa102/https://x.com/bschermd

Resources Mentioned:

Papers