I Tested My Fish Oil at Home (45% Chance Yours Is Already Rancid) | Heal Thy Self w/ Dr. G #490

Heal Thy Self with Dr. G

Wellness Loud

Alternative Health, Health & Fitness

4.9 • 1.6K Ratings

🗓️ 4 June 2026

⏱️ 9 minutes

🔗️ Recording | iTunes | RSS

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Summary

There is a 45% chance the fish oil sitting in your cabinet right now is already oxidized. And rancid omega-3s do not just fail to help you. Research shows they generate pro-inflammatory byproducts that work against everything you are taking fish oil for. Dr. G breaks down exactly how this happens, how to test what is in your cabinet tonight with zero equipment, and what to actually look for before you buy another bottle. In this episode, you will learn: • The two oxidation markers most brands count on you never knowing about, the peroxide value and the anisidin value, and the total oxidation score that tells you whether your fish oil is actually fresh • Why the number on the front of your fish oil bottle is not the amount of omega-3s you are getting, and the simple math that reveals whether you have been underdosing for years • The at-home test you can do right now with one capsule, a pin, and 30 seconds that will tell you immediately whether to keep your fish oil or throw it away Plus the specific brands that passed Dr. G's independent investigation for certificate of analysis standards, packaging, storage, meaningful EPA and DHA doses, and proper oxidation scores. Timestamps: 0:00 - Intro 1:00 - The George Washington University Study That Exposed What's on Shelves 1:46 - Peroxide Value, Anisidine Value & the TOTOX Score Explained 2:18 - Why Fish Oil Is One of the Most Chemically Fragile Supplements You Can Buy 3:10 - What Legitimate Brands Do to Protect Their Oil (And What to Look For) 3:39 - The Label Scam: 1,000mg of Fish Oil Is Not 1,000mg of Omega-3s 4:24 - What a Clinically Meaningful Dose of EPA and DHA Actually Looks Like 5:09 - Three Questions to Ask Any Fish Oil Brand Before You Buy 7:00 - How to Test the Fish Oil in Your Cabinet Right Now 8:08 - The Brands That Passed Dr. G's Investigation Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	If you take fish oil every morning for your heart, for inflammation, for your brain, there's a 45%
0:07.0	chance that what you are swelling right now is already oxidized. That's not a good thing.
0:11.0	That means it's already rancid, actively oxidized before you even open it.
0:16.0	But here's the part that changes everything. Oxidized fish oil doesn't just fail to help you. You're not going
0:22.4	to get the benefits, but research is showing that rancid omega-3s generate pro-inflammatory
0:28.8	byproducts in your body. That's doing the opposite of what you want from fish oils. I'm Dr.
0:34.7	Christian Gonzalez, a functional physician. Today I'm going to show you
0:37.6	exactly how this happens, how to test what's in your cabinet right now and what to actually
0:44.2	look for to buy a fish oil that is worth your money. Like every show, we are providing evidence-based
0:49.5	clinical supplementation advice for you so you can buy products that are safe for you, your family,
0:54.9	and worth your money. Let's do it. Don't forget to rate review and subscribe and please share
0:59.0	the show for anyone who takes fish oils. I want to tell you about the research because this is not a
1:03.5	hot take. Back in 2023, researchers in George Washington University, they analyze the most popular
1:09.7	over-the-counter fish oils that you're going to get in the U.S.
1:12.5	But here's what they found.
1:13.7	Nearly 45% of those fish oils had oxidation levels above the thresholds that were set for
1:21.0	standard.
1:21.7	And these were mainstream fish oils, the ones you're going to find at your supermarkets,
1:25.0	the one you're going to find at your grocery stores.
1:26.8	What they measured was something called peroxide value. Peroxide is the first byproduct produced
1:31.6	when a polyunsaturated fat, like EPA and DHA, come into contact with oxygen. And the standard
1:37.6	peroxide value of a fish oil is under five milli equivalents per kilogram of oil. Some of the fish oils
	...

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