Disclaimer: I am not a medical doctor and this is not medical advice. I have a PhD in Nutritional Sciences and this information is educational in nature. An Italian clinical trial peer-reviewed and published this past month in EClinical Medicine, one of the journals published by The Lancet, is nothing short of incredible. It provides rigorous evidence that …
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Is urinary mycotoxin testing useful for indoor mold exposure? | Masterjohn Q&A Files #290
Short Answer: When I had a serious case of indoor mold-induced illness, I tested my urine and my apartment dust for mycotoxins. Both were high, but the classes of toxins were totally different between the two, making me think the mycotoxins in my urine came from food rather than my apartment. Symptoms going away when …
Ferritin sky-high without hemochromatosis? | Masterjohn Q&A Files #289
Short Answer: Even if genetics and other bloodwork don’t look like hemochromatosis, sky-high ferritin justifies trying to lower it with blood donation or phlebotomy if inflammation markers are low. If this doesn’t work, oxidative stress should be investigated. Watch the video or listen to the podcast with the links below. You can obtain a full …
Will the booster shot be worth it? | Masterjohn Q&A Files #288
Short Answer: If optimizing for efficacy, the booster shot will likely be worth it for Pfizer, whereas other vaccines don’t have clear evidence of declining efficacy yet. If optimizing for safety, one should be skeptical of the booster since a 3-dose regiment hasn’t been tested in clinical trials. Watch the video or listen to the …
How to use carbs and glycine for sleep. | Masterjohn Q&A Files #287
Short Answer: To get adequate raw material for melatonin synthesis in the brain, carbs can come any time of day and are best if high-glycemic. To suppress brain histamine levels, carbs in the evening, with low protein and relatively low fat, is best. From among protein, collagen is best at night for the glycine. Watch …
What are the downsides to taking prescription calcitriol for bones? | Masterjohn Q&A Files #286
Short Answer: It requires more frequent dosing and has some risk of hypercalcemia, and it would be best to make sure you have adequate D and magnesium and aren’t overdoing anything that could deplete D, such as other fat-soluble vitamins, first. Watch the video or listen to the podcast with the links below. You can …
Version 7 of the COVID Guide is Now Out!
Newly updated September 25, 2021, and now in Version 7: The Food and Supplement Guide for the Coronavirus Version 7 This guide provides my recommendations for nutritional and herbal defense against COVID. This version covers 41 randomized controlled trials, which are the gold standard of evidence, as well as many other studies providing context for …
Does quinolinate sometimes indicate niacin or inflammation instead of B6? | Masterjohn Q&A Files #285
Short Answer: B6 cannot be ruled out, though inflammation and estrogen could also be involved. While it is possibly a regulated means of increasing excitatory effects of quinolinate, it makes sense to assume it may respond to B6. Watch the video or listen to the podcast with the links below. You can obtain a full …
Why would 5,000 IU vitamin D cause tooth sensitivity? | Masterjohn Q&A Files #284
Short Answer: While it is unclear, it could relate to vitamin K depletion, hypercalcemia, or compensation in acid-base balance. First and foremost, use the full testing algorithm in Testing Nutritional Status: The Ultimate Cheat Sheet (available at https://chrismasterjohnphd.com/cheatsheet) rather than just testing 25(OH)D to determine deficiency. Watch the video or listen to the podcast with …
What’s the best and most affordable diet for a hungry teenage boy? | Masterjohn Q&A Files #283
Short Answer: A half a gram to a gram of protein per pound of bodyweight, no more than 20-40 grams of that from protein powder, and whole foods supplying the targets for vitamins and minerals, erring on the side of overshooting them. Lentils and other legumes as primary carb foods and supply a portion of …