Podcast Summary: Your Peptide Guide—BPC-157, GHK-Copper, GLP-1s & Body Composition

Podcast: BETTER! Muscle, Mobility, Metabolism & (Peri) Menopause with Dr. Stephanie
Episode Date: March 9, 2026
Host: Dr. Stephanie Estima
Guest: Kyal Van Der Leest (Founder, Level Up Health; Nutritionist, Naturopath)

Episode Overview

This episode offers a comprehensive “Peptide Nerd Safari” focused on the burgeoning world of peptides for women’s health, particularly in the context of perimenopause and menopause. Dr. Stephanie Estima welcomes Kyal Van Der Leest, an expert in nutrition and peptide formulation, to demystify topics such as BPC-157, GHK-copper, and GLP-1 receptor agonists (like Ozempic), clarifying their science, applications, benefits, pitfalls, and practical usage—especially as they relate to gut health, joint preservation, skin and hair vitality, weight management, muscle preservation, and the unique hormonal landscape facing women over 40.

Key Discussion Points & Insights

1. Foundations: What Are Peptides?

[06:15] Kyal:

• Peptides are short chains of amino acids, acting as both endogenous (naturally produced in the body) and exogenous (taken as supplements/injections) signaling molecules.
• Pharmaceuticals like GLP-1s mimic naturally occurring peptides but are engineered for longer action.

“Simply put, [peptides are] a small chain of amino acids…they work bioidentically with our body because our body knows what they are.” — Kyal [06:15]

2. Oral vs. Injectable Peptides: Mechanisms & Practicalities

[08:01–14:12]

• Most oral peptides are ineffective due to breakdown in the gut—exceptions are smaller peptides like BPC-157 (especially BPC-arginate) and GHK-copper.
• Delayed-release capsules and liposomal technology can increase oral peptide bioavailability.
• Injectables are often potent but come with barriers: cost, discomfort, risk of contamination, and travel/storage logistics.
• Quality control is paramount with peptides; contaminated or impure injectables pose serious health risks.

“Oral peptides, for the most part, don’t work... I wish all peptides worked orally because my catalog would be in the hundreds.” — Kyal [08:28]

3. Peptide Quality & Sourcing

[08:28–14:12]

• Many online vendors now sell peptides, but quality varies greatly.
• Proper testing (certificates of analysis, heavy metal testing) is critical.
• Pharmaceutical peptides (e.g. GLP-1s) should not be purchased casually online.

4. BPC-157: The “Swiss Army Knife” Peptide

[18:46–22:41]

• Produced in the stomach, BPC-157 supports gut repair, immune regulation, joint pain relief, and has systemic benefits for skin, hair, and even brain health.
• Mechanisms of action: increases angiogenesis, fibroblast growth factor, and collagen synthesis—crucial for tissue and joint repair.
• Outstanding for both leaky gut and osteoarthritic pain; also modulates neurotransmitters like dopamine and GABA.

“BPC is probably the top peptide for gut health because it does work systemically…and act locally on the epithelium of the gut lining.” — Kyal [18:46]

• Cycling BPC-157 is important to prevent receptor downregulation (see guidelines below).

5. Autoimmunity, Gut Health, and Peptides

[26:37–31:54]

• Addressing gut permeability is foundational in treating autoimmune diseases (RA, Hashimoto’s, etc.).
• Dietary triggers (gluten, glyphosate, mold) contribute to leaky gut, setting off molecular mimicry and systemic immune misfiring.

“Every autoimmune disease, if you are healing the gut, will have some level of resolution…as a foundational pillar, gut health is absolutely mandatory.” — Kyal [26:37]

• BPC-157 can reduce gut inflammation and possibly calm autoimmune flares.

6. GHK-Copper: Peptide for Skin, Gut, and Longevity

[33:02–40:21]

• GHK-Cu is a tri-peptide with profound effects on skin collagen, wound healing, longevity gene modulation, and stem cell activation.
• Topical and oral (particularly liposomal forms) GHK-copper can both provide “skin within” benefits.
• Oral, non-liposomal GHK supports the gut lining.

“GHK is three amino acids long…small enough to pass through…and get systemic effects…It modulates something like 900 favorable longevity genes.” — Kyal [33:02]

7. Menopause, Body Composition & GLP-1 Agonists

[44:09–54:32]

• Hormonal changes cause muscle loss (sarcopenia), detrimental fat redistribution, joint injury risk.
• GLP-1s (Ozempic, Tirzepatide) are highly effective for appetite suppression and rapid weight loss but can cause adverse effects like slow gastric motility, leading to gut dysbiosis, SIBO/SIFO, and bloating.
• Microdosing GLP-1 agonists recommended for minimizing side effects.

“You’ll lose weight faster than if you did it microdosed. However, it will come at a side effect…bacterial overgrowth, leaky gut.”—Kyal [50:17]

• Peptides like BPC-157, TB4/TB500 are invaluable for joint/tissue support during increased injury risk (low estrogen).

• Rapid weight loss without detox support risks toxin redistribution to other fatty tissues (eg. brain, breast).

8. Mold Toxicity, Gut, Hormones & Peptides

[55:42–66:00]

• Mold exposure disrupts metabolic, hormonal, and neurological functions: blood sugar swings, carb cravings, water/salt imbalance, histamine excess, brain fog, estrogen dominance (“bad” estrogen types).
• Peptide support (BPC-157, KPV), liver, and histamine management supplements help, but environment remediation is first priority.

“There’s no amount of peptide…that could remedy my leaky gut while my mycotoxin levels were almost 100 times the safe level.” — Kyal [60:01]

• Detoxification (NAC, glycine, glutathione, sauna) is crucial post-mold and post-weight loss.

9. Cycling Peptides: How & Why

[66:00–69:48]

• Continuous use downregulates peptide receptors; cycling re-sensitizes the system.
• General guideline: For every 1 month on, take 1 week off (or 2 months on, 2 weeks off). For severe issues, longer cycles may be justified but followed by commensurate off-periods.

“For every two months on, [take] at least two weeks off…keep that ratio of 4:1.” — Kyal [66:38]

• GLP-1 agonists are different: due to long half-life, protocols/dosing and breaks need to be individualized.

10. Level Up Health: Product Sourcing & Availability

[71:07–76:14]

• Flagship products: GI Ultimate Repair (4-peptide blend), BPC-157 (oral), neuropeptide formulas for brain health.
• Ships globally, but import rules vary; always check your local regulations before ordering.

“We…ship everywhere and we put the onus on the individual to figure out if their country is going to seize it or [not].” — Kyal [73:57]

Notable Quotes & Memorable Moments

• On Oral Peptides:
  “Oral peptides, for the most part, don’t work…I wish all peptides worked orally…” — Kyal [08:28]

• On BPC-157’s Versatility:
  “It’s the Swiss army knife of peptides. It works on the brain, the gut, joint pain, sleep…” — Kyal [18:46]

• On Gut Health & Autoimmunity:
  “If you are healing the gut, [every autoimmune] will have some level of resolution... Gut health is absolutely mandatory.” — Kyal [26:37]

• On Safety and Cycling:
  “All peptides should be cycled…receptor downregulation is real.” — Kyal [18:46, 66:38]

• On Mold:
  “There’s no amount of peptide that could remedy my leaky gut [with severe mold]. Mold brings the Stanley knife and just rips it to shreds.” — Kyal [60:01]

• On Microdosing GLP-1s:
  “The mainstream dosing from most doctors is too high…you’ll lose weight fast, but at a side effect.” — Kyal [50:17]

• On Detox During Fat Loss:
  “Detox pathways—NAC, glycine, glutathione…binders—are so important for people on a GLP-1 journey or losing weight fast and have never detoxified.” — Kyal [54:32]

Timestamps for Major Topics

• What Are Peptides, Endogenous vs. Exogenous: [06:15]
• Oral vs. Injectable Peptides: [08:01–14:12]
• Quality Control & Sourcing: [08:28–14:12]
• BPC-157 Deep Dive: [18:46–22:41]
• Autoimmunity & Gut Health: [26:37–31:54]
• GHK-Cu & Skin/Gut/Longevity: [33:02–40:21]
• Body Comp, Menopause, GLP-1s: [44:09–54:32]
• Detox & Toxin Release: [52:00–54:32]
• Mold, Hormones, Histamine: [55:42–66:00]
• Cycling Peptides: [66:00–69:48]
• Level Up Health Product Overview & Shipping: [71:07–76:14]

Takeaway Action Steps from Dr. Stephanie & Kyal

• Consider peptides as one piece of a holistic approach (diet, exercise, lifestyle, hormone care).
• Prioritize gut health for systemic benefits, including autoimmunity and mood.
• Peptides like BPC-157, GHK-copper (oral and topical), and TB4/TB500 are most promising for women in midlife transitions.
• If considering GLP-1 agonists, go "low and slow" and support the body’s detox pathways.
• Always source from reputable vendors with robust testing.
• Cycle peptides to maintain receptor sensitivity and avoid diminishing returns.
• Absolutely address environmental toxins (e.g., mold); peptides are supportive, not curative if exposure continues.

Closing Thoughts & Host Reflection

Dr. Stephanie reflected with enthusiasm about learning alongside listeners, especially around the honest discussion of real-world efficacy (“Oral peptides, most don’t work…”), the Swiss-army versatility of BPC-157, the new appreciation for GHK-copper as both a “skin within” and longevity agent, the nuanced handling of GLP-1 risks, and the critical importance of detox support in the modern toxic world.

“I really liked that honesty... when people are not just selling a product, but are measured... I really appreciated that about him.” — Dr. Stephanie [79:40]

Further Resources & Recommendations

• For clinical peptide protocols, work with a knowledgeable health provider.
• More info: LVLUPHealth.com
• Not all peptides or protocols are suited for everyone; personalize to your health status and goals.

End of Summary