951 - The Science of Seed Oils: Are They Really Harmful?

951 - The Science of Seed Oils: Are They Really Harmful?

Author: Dr. Michael Ruscio, DC January 27, 2025 Duration: 38:29

Seed oils have been a controversial topic as of late.  But, are they all harmful? In this episode, I'll present extensive research on seed oils, how they're affecting your body, and suggest the best ways to consume them.  

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What Seed Oils Are & Why You Don't Need to Be Afraid

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Timestamps

00:00 Intro 

01:24 Linoleic acid

01:51 Do they cause inflammation?

09:07 Increased risk of heart disease?

15:06 Key heart disease studies

17:17 Omega-3 & omega-6

19:08 Processing, chemical solvents & hexane

21:24 Is refinement/hexane harmful? 

25:10 Best heating uses

29:23 Hydrogenated/trans fats

32:03 Key takeaways 

Featured Studies 

📉Omega-6 vegetable oils & heart disease

https://pubmed.ncbi.nlm.nih.gov/30364556/

📉Increasing linoleic acid & tissue arachidonic acid content

https://pubmed.ncbi.nlm.nih.gov/21663641/

📉Long-chain conversion of [13C]linoleic acid & alpha-linolenic acid

https://pubmed.ncbi.nlm.nih.gov/15576848/

📉Omega-6 fatty acids &  risk for cardiovascular disease

https://pubmed.ncbi.nlm.nih.gov/19171857/

📉Linoleic acid intake &  blood inflammatory markers https://pubmed.ncbi.nlm.nih.gov/28752873/

📉A diet containing grapeseed oil-based fats does not increase lipid peroxidation in humans https://pubmed.ncbi.nlm.nih.gov/11641740/

📉Linoleic acid & heart disease https://pubmed.ncbi.nlm.nih.gov/25161045/

📉Linoleic Acid & Type 2 Diabetes https://pubmed.ncbi.nlm.nih.gov/34417277/

📉Linoleic acid & mortality

https://pubmed.ncbi.nlm.nih.gov/32020162/

📉Foods &  LDL cholesterol

https://pubmed.ncbi.nlm.nih.gov/33762150/

📉Oils & solid fats on  blood lipids https://pubmed.ncbi.nlm.nih.gov/30006369/

📉Canola oil & cardiovascular risk factors

https://pubmed.ncbi.nlm.nih.gov/33127255/

📉Fats & cardiometabolic risk during weight gain

https://pubmed.ncbi.nlm.nih.gov/25319187/

📉Saturated Fat Promotes Fatty Liver& Ceramides

https://pubmed.ncbi.nlm.nih.gov/31369090/

📉Replacing saturated fat with n-6 polyunsaturated fat

https://pubmed.ncbi.nlm.nih.gov/28526025/

📉Reduction in saturated fat for cardiovascular disease

https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD011737.pub3/full

📉The Omega-6:Omega-3 ratio

https://pubmed.ncbi.nlm.nih.gov/29599053/

📉Cognitive Impairment & Low Omega-3 Index

https://pubmed.ncbi.nlm.nih.gov/27701160/

📉Blood Omega-3 Index & Cognition

https://pubmed.ncbi.nlm.nih.gov/26729157/

📉Omega-3 Index & risk for coronary heart disease mortality

https://pubmed.ncbi.nlm.nih.gov/28511049/

📉Omega-3 index &  type 2 diabetes

https://pubmed.ncbi.nlm.nih.gov/34740031/

📉Hexane Content in Vegetable Oils

https://openaccesspub.org/experimental-and-clinical-toxicology/article/622

📉Pressed & extracted vegetable oils

https://pubmed.ncbi.nlm.nih.gov/37576238/

📉 Cooking oils in nonalcoholic fatty liver disease

https://pubmed.ncbi.nlm.nih.gov/24625239/

📉Grapeseed/canola-oil supplementation reduces serum lipids & liver enzymes in adipose tissuehttps://pubmed.ncbi.nlm.nih.gov/25403327/

📉Whey - From waste to a valuable resource

https://www.sciencedirect.com/science/article/pii/S266615432400317X

📉Sustainable Protein Powders

https://www.foodunfolded.com/article/sustainable-protein-powders-whey-vs-plant-based

📉Protein & resistance training-induced gains https://pubmed.ncbi.nlm.nih.gov/28698222/

📉Whey Protein & Resistance Exercise Training https://pubmed.ncbi.nlm.nih.gov/37571361/

📉Ultra-processed food consumption & cardiovascular mortality

https://pubmed.ncbi.nlm.nih.gov/33536027/

📉Trans Fat https://www.fda.gov/food/food-additives-petitions/trans-fat

📉Fat hydrogenation https://en.wikipedia.org/wiki/Fat_hydrogenation

📉Heating & Trans Fatty Acid Content of Edible Oils

https://pubmed.ncbi.nlm.nih.gov/35406103/

📉Heating & Fatty Acid Composition of Plant-Based Cooking Oils

https://pubmed.ncbi.nlm.nih.gov/35053923/#:~:text=The%20present%20data%20indicate%20that,the%20number%20of%20heating%20sequences.

📉How Long to Fry Every Food https://www.tasteofhome.com/article/deep-frying-temperature-chart/#:~:text=What%20is%20the%20normal%20temperature,right%20type%20of%20cooking%20fat.

📉Lean red meat & human evolution https://pubmed.ncbi.nlm.nih.gov/10918988/

📉Fatty acid &  wild ruminant tissues https://pubmed.ncbi.nlm.nih.gov/11960292/ 

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DISCLAIMER: The information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider before starting any new treatment or discontinuing an existing treatment.

Music featured in this video "Modern Technology" by Andrew G https://audiojungle.net/user/andrew_g 

Full transcript available on YouTube by clicking the "Show transcript" button on the bottom right of the video.


Trying to make sense of the latest health trends and research can feel overwhelming. Dr. Ruscio Radio, DC: Health, Nutrition and Functional Healthcare cuts through the noise with grounded, evidence-based conversations. Hosted by clinician and researcher Dr. Michael Ruscio, DC, this podcast explores the practical side of functional health, where complex science is translated into actionable steps you can use. Episodes often start with a curious question-why does one diet work for some but not others, or what does the latest study really mean for everyday health-and follow the evidence where it leads. You’ll hear deep dives into gut health, nutrition, and fitness, balanced with a critical eye that isn’t afraid to debunk popular fads when the data doesn’t support them. The tone is conversational yet precise, reflecting Dr. Ruscio’s dual role as a practicing clinician and a dedicated investigator. Each discussion is built to provide clarity, leaving you with a clearer understanding of how your body works and what might help it work better. It’s important to note that this podcast is for educational and informational purposes. While Dr. Ruscio shares his expertise as a doctor of chiropractic, the content does not constitute personal medical or professional advice. Instead, think of it as a reliable source for thoughtful analysis, helping you have more informed conversations about your own health journey.
Author: Language: English Episodes: 100

Dr. Ruscio Radio, DC: Health, Nutrition and Functional Healthcare
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