How to Improve & Protect Your Skin Health & Appearance | Dr. Teo Soleymani

Andrew Huberman and dermatologist Dr. Teo Soleymani cover the full landscape of skin health, appearance, and longevity. They discuss how stress, caffeine, nicotine, and alcohol affect skin via blood flow and cortisol, then dig into cleansing, moisturizing, and the surprising truth that expensive products rarely outperform cheap basics. A large portion challenges conventional wisdom on the sun: Soleymani argues sun exposure has real wellness benefits and that sunscreen has never been shown to reduce the most common skin cancer, while still recommending mineral sunscreens over chemical ones. The conversation also covers prescription retinoids, laser resurfacing, red light therapy, nutrition and the gut microbiome, and common conditions like psoriasis, eczema, acne, rosacea, and vitiligo. It closes with skin cancer surveillance, the rise of HPV-driven cancers, and the future of cancer vaccines.

• Claims no randomized trial has ever shown topical sunscreen reduces basal cell carcinoma, the most common skin cancer, or reduces death from skin cancer.
  01:05:10
• As a head-and-neck skin cancer surgeon, says he firmly believes sun avoidance is unhealthy and that sun exposure has measurable wellness benefits.
  00:54:08
• Reveals most lethal skin cancers he treats arise in sun-protected skin, including a 27-year-old dying of melanoma in non-sun-exposed skin.
  01:09:24
• Cites a 2020 study finding chemical sunscreen ingredients absorb into blood at 100-500x the FDA's upper safety threshold.
  01:16:43
• Notes chemical sunscreen compounds have been found in breast milk, amniotic fluid, blood plasma, and urine.
  01:18:46
• Says everyone should be on a prescription-strength retinoid and that over-the-counter retinol is largely ineffective, possibly by design.
  01:44:48
• Reveals he has operated on six or seven patients under 40 in the past month for HPV-driven genital squamous cell carcinomas.
  02:36:27
• Notes vitiligo patients, despite losing protective pigment, have lower skin cancer rates due to heightened immune surveillance.
  02:33:20

• The skin completely turns over roughly every 28 days, making it one of the few organs that can fully regenerate.
  00:06:20
• Coffee-related facial flushing in rosacea is driven by beverage temperature, not the caffeine itself.
  00:16:14
• Studies on transepidermal water loss show drinking lots of water does not measurably improve skin hydration; that is largely genetic.
  00:24:57
• Polypodium leucotomos, an Amazonian fern eaten by indigenous fishermen to avoid sunburn, raises the skin's minimal erythema dose.
  01:21:23
• Oxybenzone's chemical structure closely resembles BPA, which has been banned from many plastic bottle linings.
  01:18:16
• Collagen is built from non-essential amino acids the body can synthesize, so supplemental collagen may work mainly via a water-drawing plasma osmolality effect.
  01:36:31
• A Harvard study found non-ablative fractionated laser (Fraxel) resurfacing cuts skin cancer risk by about 20%.
  01:52:36
• Penn State research suggests skim and nonfat dairy, not whole-fat dairy, aggravate acne due to emulsifiers with a glycemic response.
  02:18:42
• Bob Marley died of melanoma on his toenail; Jimmy Buffett died of Merkel cell carcinoma.
  02:33:52
• The US now expects roughly three times as many deaths from squamous cell carcinoma as from melanoma, losing one patient to it every 37 minutes.
  02:36:27

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