Ep 326 - Supplements Deep Dive w/ Dr. Crionna Tobin, PhD

Apr 10th, 2023


Ep 326 - Supplements Deep Dive w/ Dr. Crionna Tobin, PhD

On this episode of RNT Fitness Radio I’m joined by Dr Crionna Tobin, who’s recognised as one of the highest profile sports nutritionists in Ireland. Crionna is head of science and education in Glanbia performance nutrition (GPN), the number one global performance nutrition brand portfolio including Optimum Nutrition. In her role she leads and champions the delivery of education programmes to support the positioning of GPN and portfolio of Brands, as global leaders in sports and active nutrition.

A PhD graduate of Dublin City University in the area of exercise physiology and performance nutrition, and a registered performance nutritionist, Crionna is driven by a passion to educate and inspire everyone on the powerful role nutrition plays in enhancing all aspects of health and performance.  Working in the sports nutrition industry for the last 10 years she has gained a wealth of experience working with and educating many high profile teams and International athletes.

In this specific episode, we go into all things supplements. After mentioning in our private RNT group that I wanted to do an episode on supplements, I couldn’t believe how many questions we received… so without further ado, let’s dive into all things supplements!


02:20 Are protein powders safe?
04:40  What is the “cleanest” protein powder?
07:28  What is the verdict on artificial sweeteners?
14:15  What is creatine?
18:00 Should everyone take creatine?
22:15  How do you take it?
23.10 How do you know what supplements you need?
28.50  What supplements should vegans and vegetarians consider?
32.10  Pregnancy and nutrition watchouts!
36:05 Coffee and caffeine. Is it good or bad?
37 Are the benefits of coffee from that or caffeine?
39:35 Back to pregnancy, what to avoid and have!
43:10 Why should we take vitamin D
45:58 The Immune System
49:30 Are probiotics needed?
50:30 How do I pick the brand I buy my supplements from?
54:05 What’s in Crionna supplement cupboard
57:01 Any age restrictions to supplements?
58:45  Most underrated supplement
1:00:40  What supplement should we stop taking?

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I’m very excited and proud to announce we’ve developed a brand new partnership with one of the world’s leading premium supplement brands, Optimum Nutrition, where they’ll be helping support our RNT members, and listeners of this podcast, on their journey of health, fitness and total transformation. With the world’s #1 best-selling protein powder in their range, and a growing plant-based range, you can now use the code RNT20 to get 20% off in their US and UK stores. My personal favourite are their plant-based protein bars. I’ve literally done a 180 on protein bars since discovering these, and these were a game changer during my recent long stints in Bali and the US!

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