The Truth About Vegetable Oils and Your Skin - AI Podcast
Dr. Joseph Mercola - Take Control of Your Health
Briana Mercola
4.6 • 1.5K Ratings
🗓️ 23 June 2025
⏱️ 9 minutes
🧾️ Download transcript
Summary
Story at-a-glance
- Linoleic acid (LA), the primary polyunsaturated fat in vegetable oils and commonly found in processed foods, accumulates in skin tissue and increases your risk of sun-induced oxidative damage
- Once stored in body fat, LA leaks into circulation for years, continuously influencing your skin cell membranes even after your dietary intake of LA has stopped
- Pentadecanoic acid (C15:0), found in grass fed dairy and ruminant animals, helps displace LA from cell membranes, reduces lipid peroxidation, and supports mitochondrial and structural integrity
- Supplementing with 2 grams of C15:0 per day, combined with a low-LA diet and metabolic support, significantly shortens LA clearance from two to three years to 12 to 18 months
- Proper sun exposure becomes safer once LA has been displaced from skin membranes, but caution is needed during early clearance stages to avoid UV-induced inflammation from residual LA
Transcript
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| 0:00.0 | Welcome to Dr. Mercola's Cellular Wisdom. Stay informed with quick, easy-to-listen |
| 0:06.1 | summaries of our latest articles, perfect for when you're on the go. No reading required. Subscribe |
| 0:11.2 | for free at Mercola.com for the latest health insights. |
| 0:14.2 | Ever wondered why even a brief burst of noon sunshine can still leave you pink. Despite |
| 0:20.7 | cutting seed oils from your |
| 0:22.1 | meals, welcome to Dr. Mercola's cellular wisdom. I'm Ethan Foster, and with co-host Alara |
| 0:28.8 | Sky, I'll uncover how linoleic acid, the dominant fat and vegetable oil, embeds in your skin, |
| 0:35.4 | and how an odd chain-saturated fat called C-15-0 helps you push it out. |
| 0:40.3 | Thanks, Ethan. Linoleic acid, or LA, is the most abundant omega-6 in today's processed foods. |
| 0:48.3 | Once you eat it, your body tucks it into fat stores and cell membranes, including the keratinosites that eventually form |
| 0:55.5 | the outer layer of your skin. When sunlight hits those L.A. rich cells, the fat oxidizes quickly, |
| 1:02.1 | showering your tissue with harmful byproducts that accelerate damage. So even after you've swapped |
| 1:07.5 | soybean and canola oil for butter and tallow, L.A. you ate months, sometimes years. |
| 1:13.9 | A ghost still shows up in your bloodstream. I've heard listeners assume a low L.A. diet resets their risk in weeks, |
| 1:20.7 | yet their lab panels tell another story. Help us understand why that backlog forms and why dietary changes alone can't fix it. |
| 1:28.7 | The problem is what researchers call the adipose trap. |
| 1:32.1 | Try glycerides in your fat tissue turn over slowly. |
| 1:35.1 | Radiocarbon studies show the average molecule sits in place for about two years. |
| 1:39.5 | During that time, L.A. seeps out continuously, rides with albumin in the blood, and gets recycled into every |
| 1:46.5 | new skin cell, long after you have stopped eating seed oils. That mismatch is striking. Fat |
| 1:52.7 | stores refresh over years, yet your epidermis renews roughly every 28 days. So, with L.A. |
| 1:59.0 | flooding the supply chain, enzymes pick it simply because it's abundant, |
... |
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