Monday, March 14, 2022

YOU NEED FAT-SOLUBLE VITAMIN A IF YOU'RE CONSUMING HIGH AMOUNTS OF PROTEIN

Retinol is the fat-soluble vitamin A; Retinol Palmitate is the esther form of it.  

PROTEIN & VITAMIN A

We need look no further than Chris Masterjohn’s article, “Vitamin A, The Forgotten Bodybuilding Nutrient” (Wise Traditions, Fall 2004). As Masterjohn explains, “The utilization of protein requires vitamin A. Several animal studies have shown that liver reserves of vitamin A are depleted by a high dietary intake of protein, while vitamin A increases in non-liver tissues. One explanation for this is that adequate protein is necessary for vitamin A transport. In one study, researchers fed radioactively-labeled vitamin A to rats on low-protein and high-protein diets, using the amount of radioactivity present in exhaled gases, urine and feces as a measure of the metabolism of vitamin A, and found that vitamin A is indeed used at a higher rate on a high-protein diet.”

Masterjohn continues, “Vitamin A is not only depleted by a high intake of protein, but it is also necessary for the synthesis of new protein, which is the goal of the bodybuilder. Rats fed diets deficient in vitamin A synthesize protein at a lower rate than rats fed adequate vitamin A. Cultured skeletal muscle cells increase the amount of protein per cell when exposed to vitamin A and D, but not when exposed to vitamin D alone.”

In other words, eating lean meat or taking a protein powder sends a signal to the liver: “Send me vitamin A!” Protein consumed in the absence of fat, with its precious cargo of fat-soluble vitamins, including vitamin A, is an effective way of rapidly depleting your liver of vitamin A stores.

What happens when the liver becomes depleted of vitamin A, so that none can be made available to the body when needed?

Vitamin A is key to almost every process in the body—the concert master, so to speak—not only for protein synthesis, but also for hormone production (including sex hormones like testosterone, and thyroid hormone); vitamin A is also key to immune system function, critical for healthy vision and hearing, plays a role in bone health, and works in tandem with vitamins D and K2 for everything from the prevention of heart disease to the production of feel-good chemicals. A diet of lean meat, or one that incorporates protein powders, is a recipe for hormone disruption, fatigue, depression, bone problems, auto-immune disease, vision and hearing problems, heart disease and even cancer.

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