Patients are walking in with fiber advice from TikTok, chasing as many grams as fast as they can, and paying for it with bloating, gas, and worse. Lisa Talamini, a registered dietitian who oversees clinical programs at a weight management company, explains what fiber maxing gets wrong, why hydration decides whether fiber helps or hurts, and how layering small changes into meals people already eat gets them further than any powder.

⏱️ Chapters:
0:00 Introduction
1:14 Why fiber maxing took over social media
2:57 What your patients are actually seeing on TikTok
4:16 When more fiber turns into a medical problem
5:05 Why GLP-1 patients keep missing their fiber goals
5:51 Why a fiber pill is not the same as a plate of food
6:46 How many grams of fiber you actually need
7:12 Fiber layering, and why it beats maxing out
8:07 Why the soluble versus insoluble debate misses the point
8:53 The eating pattern that is fiber layering by design
9:45 What to say when you have two minutes for nutrition
10:32 What fiber layering looks like week by week
11:58 Why fiber without enough water fails
13:59 The red flags in the next diet video your patient watches
14:57 Take home messages

About this episode:
Lisa Talamini is a registered dietitian and health care executive who started in pediatric dialysis and transplant and now oversees clinical program integrity at a weight management company. She joins Kevin Pho to take apart fiber maxing, the social media trend that pushes people to hit high fiber targets overnight, usually through pills, powders, and heavily fortified processed foods. She explains why it fails on two fronts: it is uncomfortable, producing bloating, gas, and diarrhea, and in rare cases increasing the risk of impaction when fluid intake does not keep pace, and it delivers grams of fiber without the vitamins, minerals, and phytonutrients that come packaged in whole foods. Her alternative is fiber layering, a series of small repeatable additions to meals people already eat, like berries and nuts on oatmeal or quinoa in place of white rice, built one meal at a time until the day adds up. She points to the Mediterranean pattern as fiber layering by design, high in fiber and low in energy density, which lets people eat more volume and feel more satisfied on fewer calories. For clinicians who have two minutes for nutrition, she recommends setting one or two SMART goals instead of attempting a full overhaul, and she flags patients on GLP-1s as a group that often cannot hit fiber targets because they are eating less of everything. She puts the general target at about 25 grams of fiber a day paired with roughly 60 to 64 ounces of fluid spread across the day. And she gives patients a simple screen for diet content on social media: extreme instructions and instant results are the warning signs, because health optimization was never supposed to be a pursuit of perfection.

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