The Gut Performance MD Podcast

Dr. Beth and Nurse KC separate myth from science on whether sugar causes hyperactivity, explaining that controlled studies show no consistent "sugar rush" effect and that excitement, costumes, and the environment often explain the behavior parents see. The episode also covers how glucose and fructose are absorbed, why too much sugar can cause stomachaches, dental and weight concerns from frequent...

This episode breaks down the science and regulations behind food dyes—Red 2, Red 3, and Red 40—how the U.S. and E.U. differ, and what research says about behavior effects in some children. Dr. Beth and Nurse KC give clear, practical advice for parents: read ingredient labels, document any reactions, consider a brief dye-avoidance trial with your pediatrician, and find dye-free candy alternatives....

If you've ever been handed peppermint tea for your stomach, or told ginger tea will fix your nausea, listen up: the benefits depend on what form and dose you're getting. This episode breaks down the evidence — peppermint oil capsules (not tea) show benefit for adult IBS, while ginger capsules at about 1 g/day have the strongest data for pregnancy-related nausea. Tea offers comfort and hydration bu...

Host Nurse KC explores how real pumpkin — not just pumpkin spice — contributes fiber, water, and potassium to support digestion and hydration. Learn why canned pumpkin counts, how food water helps hydration, and why your latte’s effects may come from coffee or milk rather than pumpkin alone. Practical tips include adding pumpkin to oatmeal, smoothies, or soup, checking labels for plain pumpkin, an...

This episode breaks down what causes hangovers beyond dehydration — how alcohol is metabolized (ethanol → acetaldehyde → acetate) and how it disrupts fluid balance, sleep, the gut, inflammation, and the nervous system. Dr. Beth and Nurse KC test common hangover rules (beer before liquor, clear vs dark spirits, carbonation, sugar, shots) and explain which effects are physiological and which are due...

Walk the modern drink aisle with Dr. Beth and Nurse KC to learn how to tell meaningful hydration from marketing. Understand that not every beverage is a hydration solution: ask what job the drink should perform, which ingredients do that job, and whether the doses and evidence support the claim. Pleasure and palatability matter, but function requires appropriate formulation. Consider context—every...

This episode explains how GLP‑1 medications can affect hydration by reducing thirst and meal‑linked drinking, altering stomach tolerance, or causing vomiting and diarrhea that directly remove fluids and electrolytes. Dr. Beth breaks down the mechanisms and gives a three‑level plan: water as the base for normal days, electrolytes when losses or heavy sweating justify them, and properly formulated o...

 Nurse KC and Dr. Beth break down Kylie Jenner's summer beverage lineup — Dunkin's King Kylie drinks, Kylie’s K2O hydration powder, and Sprinter vodka sodas. They explain the difference between a refreshing drink and an effective rehydration product, review ingredients like collagen and hyaluronic acid, and clarify what these products can and cannot do for skin and hydration.

Nurse KC and Dr. Beth explain what a "salty sweater" is—people who lose extra sodium in sweat—and how it can show up as white streaks on clothing, salt crusts, gritty skin, or feeling wiped out despite drinking water. The episode covers why sodium matters, causes (genetics, sweat rate, heat acclimation), when salty sweat warrants medical attention, and practical advice: notice patterns, match repl...

Join Nurse KC and Dr. Beth as they break down when adult electrolyte packets like Liquid IV can be used for children, and when pediatric oral rehydration solutions like Pedialyte are required. They explain age-based recommendations, dilution and dosing tips, differences between sports hydration and illness rehydration, and practical steps for what to buy and how to mix it. Key takeaways: water-fir...

Dr. Beth and Nurse KC explain why hydration must be individualized by the person, place, pace, and plan, and how the gut affects fluid and electrolyte absorption during outdoor activity. They offer practical tips for day hikes, backpacking, trekking, and high-altitude travel, cover signs of heat and altitude illness, advice for kids, and a short pre-hike hydration checklist.

Summer 2026 is poised to be unusually hot, and this episode explains how heat changes physiology—sweat, sodium loss, blood flow shifts, and gut tolerance—and why one-off hydration packets don’t automatically meet your needs. Learn to choose hydration by purpose (daily maintenance, sweat replacement, heat/performance, illness, kids, or older adults), understand why mixing ratios and ingredients mat...

In this episode Nurse KC and Dr. Beth explain how brain hydration depends on stable blood flow, sodium balance, osmolality, and cell volume — and why the gut is essential because it absorbs the fluids and electrolytes that enter circulation. They cover common dehydration symptoms, why drinking more water isn't always the answer, and practical takeaways: balance fluids and electrolytes, consider gu...

Dr. Beth cuts through the overwhelm of wellness trends and marketing to deliver a simple, science-first approach to hydration, gut health, and performance. Learn why slowing down, asking better questions, and personalizing your plan matters more than chasing every new product.

Nurse KC and Dr. Beth unpack how creatine affects muscle water and why hydration starts in the gut. They explain absorption through the small intestine, the role of sodium‑glucose transport in fluid uptake, and how body water is split between intracellular and extracellular compartments. Creatine can increase intracellular muscle water but doesn’t replace fluids, electrolytes, or blood volume lost...

Dr. Beth and Nurse KC break down pediatric hydration — why children are more vulnerable, how dehydration often shows up as behavior changes, and when plain water isn’t enough. Learn practical signs to watch for, sodium guidance for sports, and simple strategies to keep kids hydrated and performing their best.

Spring dehydration is sneaky—temperature swings, increased outdoor activity, allergies, caffeine, and alcohol change your fluid needs before summer arrives. In this episode Nurse KCand Dr. Beth explain why spring is the perfect time to start intentional hydration, introduce the new "Hydration Crimes of Spring" segment, and walk through common pitfalls (golfing, youth sports sidelines, festivals, g...

Dr. Beth and Nurse KC break down hydration confusion and explain two main intestinal transport pathways: glucose-sodium (SGLT1) and amino acid/peptide-assisted routes (including PEPT1). They compare efficiency, use cases, and where sugar-free, amino acid-based products fit in the Gut Performance MD drop system, offering practical guidance on choosing the right hydration strategy for different need...

Dr. Beth and KC introduce the Drops System, a simple, physiology-based way to plan hydration. Learn to hydrate intentionally with three tiers—Flow (baseline), Activate (faster absorption), and Perform (replacement for sweat)—so your body actually uses the fluids you drink. Start your plan each morning, pace intake throughout the day, and tailor drops to your activity and environment. This episode...

Hydration Confusion breaks down why “drink more water” is incomplete and explains the difference between maintenance hydration and rehydration after sweat, illness, or endurance activity. The episode covers oral rehydration solutions (ORS), the SGLT1 sodium–glucose transport pathway, sugar-free alternatives like amino acid co-transport, and practical guidance on choosing the right hydration strate...

In this episode Nurse KC and Dr. Beth explain why even a 2% body-weight loss impairs power and focus, how plasma volume and environment (heat, altitude, cold) change hydration needs, and why salt is critical for fast fluid absorption. They review product options for different intensities (LMNT and PRECISION HYDRATION 1500.) Hydration for ultra-high sodium; Liquid IV and Skratch Labs for performanc...

Dr. Beth, the Gut Performance MD, breaks down desert-festival hydration: why water alone can fail, the role of sodium, potassium, and glucose, and practical steps to stay energized through long sets. Learn the preload routine, the one-to-one rule for alcohol/caffeine, micro-sipping limits, hydrating foods, red flags for heat emergencies, and why electrolyte packets and a hydration pack are festiva...

In this episode we explore the high-stakes world of D1 vaulting and how precise hydration transforms power, timing, and nerve for split-second performances. Dr. Beth from Gut Performance MD explains why targeted carbohydrate-electrolyte mixes—especially sodium—matter, how to time drinks (three hours out, a primer 20 minutes before warm-ups, and sipping between rotations), and how to avoid a sloshy...

Dr. Beth explains why sugar-free hydration drinks are useful for everyday activity but not always the best choice during intense or prolonged training. She describes how small amounts of carbohydrate improve fluid and sodium absorption and emphasizes individualized hydration strategies based on sport, intensity, duration, climate, and metabolism.

Dr. Beth explains why the liver is the body’s master battery and recycling plant for athletes, and how a sluggish liver undermines recovery and performance. Learn four practical strategies—refuel with carbs + protein after training, hydrate to support detox and bile production, prioritize sleep for liver cleanup, and avoid alcohol/processed sugars—to keep your liver tuned for peak performance.