Showing: 1 - 10 of 331 Articles

Is Whole Food Vitamin C Really Different? | Masterjohn Q&A Files #330

Question: Is whole food vitamin C superior to natural because it is part of a tyrosinase complex? Short Answer: Vitamin C is nearly ubiquitously distributed in plant tissues, and is never bound to any enzyme as a structural complex. Vitamin C promotes absorption of iron from plant foods, inhibits copper absorption, and de-loads copper from ceruloplasmin, which …

What’s the Deal With Seed Oils? | Masterjohn Q&A Files #329

Question: What Is the Real Issue With Seed Oils? Short Answer: The main issue with seed oils is that they present an oxidative liability. They do not acutely cause oxidative stress, but their polyunsaturated fatty acids (PUFAs) are more vulnerable than any other macronutrient to oxidative damage. Oxidative stress can increase because of nutrient deficiencies, …

Is Hair Mineral Testing Useful? | Masterjohn Q&A Files #328

Question: How useful is hair trace mineral analysis (HTMA) for nutritional testing? Short Answer: Hair trace mineral analysis is included as an optional add-on in the comprehensive nutritional screening from Testing Nutritional Status: The Ultimate Cheat Sheet, because it can capture data for some ultra-trace minerals for which there are no better-validated tests, and it might capture …

How to Find the Root Cause of Autoimmunity? | Masterjohn Q&A Files #327

Question: How do we find the root cause of an autoimmune condition? One example considered where the root cause is energy metabolism. Short Answer: Autoimmune conditions are likely driven by deficiencies of vitamins A and D, which contribute to post-infectious autoimmunity by compromising the rhythmic rise and fall of myeloid-derived suppressor cells (MDSCs), and to autoimmunity regardless …

Why Would Vitamin C cause muscle pain, joint pain, and brain fog? | Masterjohn Q&A Files #326

Question: Why Would Vitamin C cause muscle pain, joint pain, and brain fog? Short Answer: Acutely, vitamin C would likely cause these effects by generating oxalate, which could cause crystals that lead to muscle and joint pain, and could cut energy metabolism in half, leading to brain fog. This vulnerability could result from deficiencies of …

How can I protect against oxalates? | Masterjohn Q&A Files #324

Question: How can I protect against oxalates? Short Answer: Getting 300-400 mg calcium between food and supplements at each meal will minimize oxalate absorption. Maintaining postprandial urine pH in the 6.4-6.8 range by getting 3-5 grams of potassium per day from food or from organic acid salts such as potassium citrate will prevent its crystallization in the …

Why Should Postprandial Glucose Be Kept Under 140 mg/dL? | Masterjohn Q&A Files #323

Question: Why should postprandial blood glucose be kept under 140 milligrams per deciliter? Short Answer: When blood glucose rises above 140 mg/dL, this is the approximate point at which it spills into the polyol pathway at a greater-than-normal rate, which represents a suboptimal state of metabolism that is likely to hurt antioxidant status and compromise detoxification pathways …

What is the relationship between copper and estrogen? | Masterjohn Q&A Files #322

Question: What is the relationship between copper and estrogen? Short Answer: Estrogen moves copper from the mother’s bloodstream to the fetus during pregnancy. Its action at the intestines is poorly understood but I believe estrogen and progesterone interact to promote intestinal copper absorption. Maintaining pregnancy-level hormones while not pregnant poses a risk of promoting too much absorption …

How to slow or reverse graying of hair? | Masterjohn Q&A Files #321

Question: How to slow greying of hairs and potentially reverse it? Short Answer: What works for any given individual will likely be to find the weakest link and fix it, from among the following systems: the signaling of energy abundance (body fat, insulin sensitivity, thyroid hormone, adequate protein, individualized meeting of carbohydrate needs, good management of psychosocial …