All Episodes

If my tryptophan is low, and I'm on a low-carb diet, would you recommend 5-HTP supplements or tryptophan supplements or both? | Masterjohn Q&A Files #54

What to do if signs and symptoms of zinc deficiency persist despite taking 75 mg zinc gluconate per day. | Masterjohn Q&A Files #53

What to do about high arsenic. | Masterjohn Q&A Files #52

Are low total omega-6 levels on the ION panel a cause for concern? | Masterjohn Q&A Files #51

What to do when high selenium levels won't come down, even if you've stopped supplementing. | Masterjohn Q&A Files #50

When should you take creatine, if you don't have an MTHFR SNP? | Masterjohn Q&A Files #49

When to take tryptophan on a ketogenic diet. | Masterjohn Q&A Files #48

Alex Leaf answers a question about creatine non-responders and methylation. | Masterjohn Q&A Files #47

How to bring up low levels of arachidonic acid. | Masterjohn Q&A Files #46

How to interpret the pattern of high citrate, low cis-aconitate, low glutamate, and high glutamine. | Masterjohn Q&A Files #45

Nutritional strategies for glucose 6-phosphate dehydrogenase (G6PDH) deficiency. | Masterjohn Q&A Files #44

How much fatty fish should you eat? | Masterjohn Q&A Files #43

How to deal with the fact that blood tests for nutritional status aren't adapted to children. | Masterjohn Q&A Files #42

Matt stone and the "overdeification" of vitamin A. Or, are there many people who are vitamin A deficient? Hypersensitivity reactions, fatty liver, overzealous use of cod liver oil, and other concerns. | Masterjohn Q&A Files #41

Is it ok to mix carbs and fat? | Masterjohn Q&A Files #40

What are "parent essential oils"? Should we get these instead of cold-water fish oils? Response to Brian Peskin's theory. | Masterjohn Q&A Files #39

How to use an Oura ring to monitor HRV and optimize recovery and performance. | Masterjohn Q&A Files #38

Concerns about vitamin A in pregnancy | Masterjohn Q&A Files #37

Does mixing carbohydrate with fat cause people to get fat because of the Randle cycle? | Masterjohn Q&A Files #36

What to do if gamma-tocopherol levels are low-normal while taking 100 IU/d of alpha-tocopherol. | Masterjohn Q&A Files #35

What to do if taking biotin and yet beta-hydroxyisovalerate is elevated. | Masterjohn Q&A Files #34

B6 deficiency, and who is a man with high estrogen, what should they do? | Masterjohn Q&A Files #33

For someone who is homozygous for the H63D allele of the iron- and hemochromatosis-related HFE gene, if ferritin is low but transferrin saturation is high, should they still donate blood? | Masterjohn Q&A Files #32

How to lower a resting heart rate in the 80s or 90s. | Masterjohn Q&A Files #31

How to manage the zinc-to-copper ratio and what to do if zinc and copper are both low-normal when supplementing with 15 mg of zinc and 1 mg of copper. | Masterjohn Q&A Files #30

What nutrients are needed to break down old, damaged bone and build new, healthy bone? | Masterjohn Q&A Files #29

What are my thoughts on detoxing heavy metals? | Masterjohn Q&A Files #28

What to do about elevated morning blood glucose in the mid 90s. | Masterjohn Q&A Files #27

What to do, in the context of diabetes, if T3 supplementation does not increase heat production? | Masterjohn Q&A Files #26

What are your top three non-nutrient factors that prevent beta-oxidation or ketogenesis? | Masterjohn Q&A Files #25

Recommendations for peripheral neuropathy | Masterjohn Q&A Files #24

How to improve LDL receptor activity. | Masterjohn Q&A Files #23

Recommendations on magnesium supplements and dosage | Masterjohn Q&A Files #22

How to lower your calcium score | Masterjohn Q&A Files #21

What do you think of alternative testing like hair mineral analysis or SpectraCell? | Masterjohn Q&A Files #20

How to address edema. | Masterjohn Q&A Files #19

How do you determine if you're getting enough protein? | Masterjohn Q&A Files #18

What supplements would you recommend for a ketogenic diet? | Masterjohn Q&A Files #17

Why would a male have low blood levels of calcium? | Masterjohn Q&A Files #16

Can a low-carb diet cause waking up in the middle of the night? | Masterjohn Q&A Files #15

Best formula and dosage of no-carb electrolytes to take at night to optimize sleep, especially after sauna use | Masterjohn Q&A Files #14

Heart palpitations as a result of vitamin K2 supplementation and whether increasing calcium intake could help | Masterjohn Q&A Files #13

Bovine colostrum for those with dairy sensitivities, and what to do about food sensitivities in general | Masterjohn Q&A Files #12

The Carnivore Debate Part 2 | Mastering Nutrition #70

The Carnivore Debate Part 1 | Mastering Nutrition #69

If your cholesterol is high, how do you avoid having a large burden of oxidized LDL? | Masterjohn Q&A Files #11

The role of the lymphatic system in fat metabolism | Masterjohn Q&A Files #10

The relationship between Lp(a) and cardiovascular disease| Masterjohn Q&A Files #09

Could magnesium hydroxide be absorbed via skin and cause hypermagnesemia? | Masterjohn Q&A Files #08

Concerns about long-term bicarbonate supplementation and other suggestions for raising pH | Masterjohn Q&A Files #07

Should you be more concerned about overall fat intake or saturated fat intake with familial hypercholesterolemia?| Masterjohn Q&A Files #06

How would you address normal TSH but low T4? | Masterjohn Q&A Files #05

Best clinical way to monitor COMT function if you have already tested for SNPs | Masterjohn Q&A Files #04

Supplements that may lower anxiety at night and improve heart rate variability during sleep | Masterjohn Q&A Files #02

What causes low white blood cell count and what can you do about it? | Masterjohn Q&A Files #01

Supplements that may increase deep sleep | Masterjohn Q&A Files #03

Ask Us Anything About Sports Nutrition with Chad Macias, Danny Lennon, and Alex Leaf, May 25, 2019 | Mastering Nutrition #68

Ask Us Anything About Hormones with Dr. Carrie Jones, May 10, 2019 | Mastering Nutrition #67

Pantothenic Acid, Part 2 (Testing, Food, and Supplements) | Mastering Nutrition #66

Ask Me Anything About Nutrition, March 8, 2019 | Mastering Nutrition #65

Riboflavin for Strange Unresolved Health Problems | Chris Masterjohn Lite # 153

High-Dose Riboflavin for Migraines | Chris Masterjohn Lite #152

Riboflavin for Iron-Deficiency Anemia | Chris Masterjohn Lite #151

Riboflavin Supplements: Free B2 Is Better Than FMN or Riboflavin 5'-Phosphate | CML #150

The Best Blood Test for Riboflavin | Chris Masterjohn Lite #149

How to Get Enough Riboflavin From Food | Chris Masterjohn Lite #148

Pantothenic Acid, Part 1 (What It Is and Why We Need It) | Mastering Nutrition #64

Exercise and Dieting Make You Need More Riboflavin | Chris Masterjohn Lite #147

High-Fat Diets Make You Need More Riboflavin | Chris Masterjohn Lite #146

Riboflavin and Tanning Beds for Fungal Infections? | Chris Masterjohn Lite #145

Sunlight and Tanning Beds Hurt Your Riboflavin Status | Chris Masterjohn Lite #144

How to Know If You Need More Riboflavin | Chris Masterjohn Lite #143

Ask Us Anything About Gut Health |Mastering Nutrition #71

How to Take Niacin Without Hurting Your Liver | Chris Masterjohn Lite #142

How to Take Niacin Without Flushing | Chris Masterjohn Lite #141

How to Take Niacin Without Getting Diabetes | Chris Masterjohn Lite #140

Should You Use Niacin to Lower Your Blood Lipids? | Chris Masterjohn Lite #139

The Best Blood Test for Niacin | Chris Masterjohn Lite #138

How to Get Enough Niacin From Food | Chris Masterjohn Lite #137

Do Women Need More Niacin Than Men? | Chris Masterjohn Lite #136

How to Free the Niacin in Grains and Seeds | Chris Masterjohn Lite #135

Coffee! How to Free the Locked-Up Niacin | Chris Masterjohn Lite #134

How to Know If You Need More Niacin | Chris Masterjohn Lite #133

How to Safely Take Nicotinamide Riboside for Anti-Aging | Chris Masterjohn Lite #132

The Best Form of Niacin for Anti-Aging | Chris Masterjohn Lite #131

Should You Inject Yourself With NAD+? | Chris Masterjohn Lite #130

What to Do About Fatty Liver | Chris Masterjohn Lite #129

Vitamin A and Fatty Liver | Chris Masterjohn Lite #128

Vitamin A and Pregnancy: Should You Worry? | Chris Masterjohn Lite #127

What to Do About Vitamin A Toxicity | Chris Masterjohn Lite #126

How to Know If You Have Vitamin A Toxicity | Chris Masterjohn Lite #125

Do Children Need Less Nutrients Than Adults? | Chris Masterjohn Lite #124

Your "MTHFR" Is Just a Riboflavin Deficiency | Chris Masterjohn Lite #123

How to Use an Oura Ring and HRV for Exercise Performance and Recovery | Chris Masterjohn Lite #122

5 Signs Your Brain Needs More Vitamin C and Copper | Chris Masterjohn Lite #121

Niacin, Part 2: Blood Tests, Foods, and Supplements | Mastering Nutrition #62

Ten Steps to Healthy Sleep | Chris Masterjohn Lite #120

How to Stop Waking Up to Pee | Chris Masterjohn Lite #119

Vitamin A for Sleep | Chris Masterjohn Lite # 118

How to Make Your Own Melatonin | Chris Masterjohn Lite #117