How to Look Younger After 35: Testosterone, Peptides, and Gut Health for Anti-Aging
Episode Summary
Cole Siefer and Colin Renaud DC, PA-C explore the concept of "looks maxing," a social media trend focused on optimizing physical appearance, and make the case that functional medicine is uniquely positioned to support it from the inside out. The episode covers how internal health reflects externally (skin, body composition, hair), the role of testosterone for both men and women, specific peptides that improve aesthetics, gut health and skin connection, and three patient case studies across different ages and demographics. The core message is that looking your best long-term requires fixing what is happening inside your body, not just applying external treatments.
Key Topics
- 1
What "looks maxing" is and how functional medicine supports it
- 2
Diet as the primary lever for physical appearance (skin, weight, inflammation)
- 3
Testosterone optimization for men and women (body composition, acne, fat distribution, PCOS)
- 4
Peptides for aesthetics: BPC-157 (collagen, healing), CJC-1295 (growth hormone, lean muscle), copper peptide GHK-Cu (skin, collagen, firmness)
- 5
Gut health and its connection to skin conditions (acne, eczema, psoriasis) and bloating
- 6
Stool testing for microbiome assessment
- 7
Patient case studies: perimenopausal woman, hypothyroid 30-year-old woman, 45-55-year-old man with high blood pressure
- 8
Why perimenopausal women should stop intermittent fasting and get off the treadmill
- 9
The updated food pyramid (referenced but not fully covered before transcript ends)
- 10
Why a provider's own health is a signal of credibility
Quotable Moments
“Functional medicine kind of indirectly promotes looks maxing. When you feel really good on the inside, it reflects on the outside.”
“If you have a goldfish and the tank is dirty, what do you do? You change the water. You don't medicate the fish.”
“They think they're doing the right thing and no one educates them. Women are doing intermittent fasting and walking on the treadmill and they're not doing the right thing. And they don't know.”
“If you look at photographs of people on beaches in the 1970s, no one was overweight. If you go to the beach now, almost everybody is overweight. What's happened over these years is we've put worse things in our body.”
“Imagine if you went in and said, 'Primary care doctor, I want to look younger.' They'd have no idea where to start.”
Treatments Mentioned
FAQ
Functional Medicine FAQ
Gut microbiome imbalance causes bloating, inflammation, and puffiness visible from the outside. Dairy is linked to eczema, acne, and psoriasis. Advanced stool testing can identify specific microbiome dysfunction behind persistent skin issues that topical treatments never resolve.
Copper peptide (GHK-Cu) stimulates collagen production and reduces wrinkles. BPC-157 increases collagen synthesis and improves blood flow for skin radiance. CJC-1295 boosts natural growth hormone for lean muscle and fat loss.
Yes. Testosterone optimization changes body composition in favor of more muscle and less visceral fat. It also improves skin elasticity. For men, testosterone declines 1 to 2% per year after 30, directly affecting appearance.
Women in perimenopause do not respond well to intermittent fasting. Insufficient caloric intake during hormonal shifts worsens appearance (weight gain, dull skin, low energy). They need adequate protein, hormone evaluation, and resistance training instead.
Yes. Studies show the stronger you are, the longer you will live. Muscle mass is a longevity organ. Resistance training improves body composition, bone density, metabolic efficiency, and physical appearance far more effectively than cardio alone.
Functional medicine treats appearance as a direct output of internal health, addressing hormone imbalances, gut dysfunction, nutritional deficits, and inflammation. Fixing the inside produces lasting external results that topical treatments alone cannot achieve.
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