About This Show
Hi, I'm Chris Masterjohn and I have a PhD in Nutritional Sciences. I am an entrepreneur in all things fitness, health, and nutrition. In this show I combine my scientific expertise with my out-of-the-box thinking to translate complex science into new, practical ideas that you can use to help yourself on your journey to vibrant health. This show will allow you to master the science of nutrition and apply it to your own life like a pro.
Most Recent Episode
35: Why You Should Manage Your Selenium Status and How to Do It
4 days ago
Selenium is critically essential to the defense against oxidative stress and to thyroid hormone metabolism. Soil concentrations cause so much variability in the selenium content of foods that any two of us could be eating the same diet and one of us could have too little selenium and the other too much. That makes it essential to understand how to measure and manage our nutritional status. In episode 35, I continue the series on managing nutritional status by teaching you how to do just that. The show notes for this episode are found at chrismasterjohnphd.com/35. The shownotes contain recommendations about foods and supplements. This episode is brought to you by Kettle and Fire Bone Broth. Use the link kettleandfire.com/chris to get $10 off your first order. This episode is also brought to you by US Wellness Meats. Head to grasslandbeef.com and enter "Chris" at checkout to get 15% off your order as long as the final price is over $75 and you order fewer than 40 pounds of meat. You can use "Chris" to get the same discount twice. In this episode, you will find all of the following and more: 0:00:34 Introducing the new name, Mastering Nutrition; 0:01:00 Cliff Notes; 0:10:55 My story with selenium deficiency: white spots in fingernails and frequent colds; 0:14:14 Soil variation plays a major role in selenium deficiency and toxicity; 0:18:40 Biological roles of selenium (antioxidant protection, immunity, thyroid health, through glutathione peroxidases and thyroid deiodinases, control of protein function through thioredoxin reductase, other poorly understood roles); 0:29:00 Signs of deficiency (vulnerability to viral infection and other infection, hepatic cirrhosis, white fingernails that can fall out, cardiac insufficiency and enlargement of the heart with fibrosis and necrosis as occurs in Keshan disease, increased vulnerabi