What does vitamin A do in the Body?
Dr. Ray Peat a leading thyroid expert writes about the importance of vitamin A in the production of the body’s anti-aging and anti-stress hormones. Dr. Ray Peat also mentions Vitamin A’s importance for healthy eyes, teeth, and skin as well as good immune function. Getting enough vitamin A is necessary for the integrity of mucous membranes and thereby the protection of the body from the outside environment.
What is the function of vitamin A?
The body’s anti-aging hormones include pregnenolone, progesterone, and DHEA. These hormones are necessary for good health and the body’s resistance to stress, aging inflammation, and disease. Pregnenolone, progesterone, and DHA are produced in high amounts in youth, thus they are called youth associated hormones.
The body needs cholesterol, vitamin A, red light, and thyroid hormone to produce enough of these youth associated hormones. Thus, vitamin A is an important part of our protective hormone system.
Your metabolic rate determines how much vitamin A you need. According to Dr. Ray Peat, the higher your thyroid function the more vitamin A your body needs.
Symptoms of vitamin A deficiency?
In our hypothyroid treatment program, you can learn more about the importance of the body’s protective hormones, and which symptoms indicate that your production of pregnenolone, progesterone, and DHEA is too low. You can also learn about how you can supplement with the youth association hormone in our hormonal support guide.
What foods are rich in Vitamin A?
From highest to lowest content of Vitamin A: Cod liver turkey liver, beef, pork, and fish liver, chicken liver, ghee, butter, cheddar cheese, eggs, and milk.
Supplementing with vitamin A
According to Dr. Ray Peat, a normal dosage of vitamin A is around 10.000 IU. But a person with a very high thyroid function might need 50.000 IU in order to avoid problems with vitamin A deficiency.
The higher your thyroid function the more vitamin A you need, and the more protective hormones (pregnenolone, progesterone, and DHEA) you produce.
On the other hand, if you have a low thyroid function you need to be careful not to overdose on vitamin A, as it can have anti-thyroid effects. If your thyroid function is low, using a vitamin A supplement is generally not advisable. You can get an idea of your thyroid function by testing your thyroid using pulse and temperature.
Importantly beta-carotene supplements which are often sold as vitamin A are not recommended by Dr. Ray Peat. First of all very little of the beta-carotene is converted to vitamin A, and beta-carotene has a similar structure to polyunsaturated fats, which inhibits thyroid function. You can learn more about which foods and substances inhibit thyroid function in our Hypothyroid Treatment Program.
We have collected a list of high-quality Dr. Ray Peat inspired nutritional supplements that are supportive of a healthy thyroid function and good hormonal balance. In our Vitamin And Minerals Guide, you can learn about brands and dosages of Vitamin A and other nutritional supplements which are beneficial in a thyroid supporting lifestyle