Reply To: My vitamin D level on 8/12/15 was 18. I live in Texas and am a full-time, year round horse trainer and riding instructor. My vitamin D levels are always low…but this time was seriously pushed to take supplement of which I have started. My other bloodwork is perfect. I am 41 yr old female of mixed race ethnicity and have very light skin and I do not where sunscreen nor do I teach or ride in a covered arena. How can this be possible year after year? I also have tight facial skin and am told I look like I am in my 20's….I would have thought the sun would have sped up my aging process by now. I would like to know what would prevent my skin from converting sunshine to vitamin D. This has been my job since I was 11 years old! Thanks
The other day there was a blog item titled “Mendelian randomization: Genetically low vitamin D levels linked to multiple sclerosis”. In it Dr. Cannell wrote “You may think vitamin D levels entirely depend on how much sunshine you receive or supplements you take, but that is not always the case.” “Some people inherit genes that result in chronically low vitamin D levels.” Now I am not saying this is your problem but this is the first time I have heard of this factor. Do you wear shorts and a no sleeve shirt while training? You would be surprised how much of your body surface you need to “expose” in order to make a decent amount of Vitamin D. Exposing just your arms and face does not produce as much. (This is probably the issue but you will have to let me know.) Then you also get to figure in the angle of the sun and time of day. One of our members just said that until she added Vitamin K to her supplement routine did her very low Vitamin D levels finally begin to rise. (She was taking Vitamin D but her levels would not go up.) If you are magnesium deficient then taking supplements or getting sunshine can cause symptoms but I wonder if maybe it could just stop you from producing Vitamin D. Just a thought but nothing scientific behind it.