Are oils good or bad for you?

by | Sep 16, 2021 | Podcasts | 2 comments

Podcast Episode 102

Are oils good or bad for you? Turns out…both! It just depends on the oil, how it was processed and whether or not it’s heated. Tune in with our rockstar guest, Udo Erasmus, well known author of “Fats that Heal, Fats that Kill” to find out more!



      • What are we getting wrong about oils?
      • Is frying in oil a bad idea?
      • What impact does heating and processing do to oils?
      • Can you cook in water?
      • What are the health benefits of Omega 3 oils?
      • Should you only buy organic oil?
      • How do we get more flax into the diet?
      • Is canola oil ok to consume?
      • What happened when Udo got pesticide poisoning?


1. Udo Erasmus Website

2. Udo Products:

3. Link to Udo’s “Your Body Needs An Oil Change” free book and bonus videos 

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4. Cholesterol Episode

4. Scoop Marketplace


1. Sesame Sweet Potatoes with Green Onions by Melissa Altman-Traub MS, RDN, LDN IG: @melissatraubrd

2. Chocolate Overnight Oats and Raspberry Chia Pudding Parfaits by Chef Julie Andrews, MS, RDN, CD IG: @thegourmetRD

3. Zero Waste Energy Balls by Rhyan Geiger, RDN owner of Phoenix Vegan Dietitian IG @phxvegandietitian

4. Peanut Butter Oatmeal by Lisa Andrews, MEd, RD, LD Owner, Sound Bites Nutrition, LLC IG: @nutrigirl66

About the Show

Mary Purdy, MS, RDN, dishes out easy-to-digest information and tips about nutrition, lifestyle, and sustainable foods, backed by over 12 years of clinical experience, a specialty in and passion for sustainability, and a healthy sense of humor.

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ABOUT MARY: Mary Purdy is an Integrative Eco- Dietitian with a Masters in Clinical Nutrition from Bastyr University where she is Adjunct Faculty and a Clinical Supervisor at their teaching clinic. She writes, consults and  speaks at conferences throughout the year,  and was the Keynote speaker at the 2019 Bastyr University Commencement. Past experience includes:

  • 4 years as Coach and Clinical Education Lead at Arivale, Seattle
  • 8 years in private practice
  • 5 years Clinical Supervisor at Bastyr Center for Natural Health

Mary takes an integrative/holistic approach to diet, health & wellness, promotes plant-based and sustainable eating habits and believes that food is medicine!

DISCLAIMER: This podcast is intended for entertainment purposes only. Please consult your doctor before following any information you hear here. The opinions expressed here are those exclusively of Mary Purdy, the Show’s producers, and guests.


  1. Cheryl Orlansky RDN


    I enjoyed Udo Erasmus’ interview with you. I take issue with his statement that plant omega’s from flax are just as active as fish oils in the body. Many health organizations rec. fish omega 3 vs plant omega 3’s due to the steps it takes the body to convert the fat into the active form. this is from Harvard Health:
    “Alpha-linolenic acid (ALA), the most common omega-3 fatty acid in most Western diets, is found in vegetable oils and nuts (especially walnuts), flax seeds and flaxseed oil, leafy vegetables, and some animal fat, especially in grass-fed animals. The human body generally uses ALA for energy, and conversion into EPA and DHA is very limited.”
    I don’t think that this comment is a “marketing scheme” but maybe he is marketing his products even more? What are your thoughts?

    • Mary Purdy RD

      Hi Cheryl,
      Thank you so much for listening to the podcast and taking the time to reach out. I was also surprised by his comment so I did a little research.

      While I found copious evidence to support the conventional understanding that Omega 3s from plant sources are converted to DHA at a significantly lower rate, I also came across various studies which found that plant sources of Omega 3s produced the same anti-inflammatory effects of those from animal sources. Interesting! However, I personally think that for brain and eye development (and potential mood/cognitive issues) it may be necessary to get in DHA from fish or algae oil depending on the person and medical background and current situation. (“Limited” doesn’t mean zero, right? 🙂 ) Personalized medicine all the way here.

      The body is endlessly fascinating and complicated! Maybe there is more to the action of Omega 3s in our body than we currently understand. This is something I will continue to look into and please feel free to reach out to me again if you come across any new research on this topic!

      Thank you again for listening! If you want to keep the conversation going please follow me on instagram @marypurdyrd
      Warmly, Mary


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First things first: I love chocolate. I love kale. And I consume them both regularly, but generally not at the same time (although, ask me about my chocolate, berry & kale smoothie!) I also love helping people find easy ways make their body, mind, and life better while also making eco-friendly choices that support the health of our planet.


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