The side effects from too much vitamin D
July 31st, 2008
Most of us know all know about the good things the sun can do for your skin and why it’s so important to get out there and get some of those rays (but not too much of course).
However, there are some folks out there with a vitamin D deficiency. This might be because they do not get enough time outdoors or because of an internal imbalance of some kind. For those with a deficiency, doctors are suggesting a vitamin D supplement. But what happens when you have too much vitamin D?
You will feel ill, that’s what.
Too much vitamin D may cause constipation, nausea, vomiting, weight loss, and weakness. If you have a change in your heart rhythm or become confused more easily, you may have an increased level of calcium, which is caused by too much vitamin D.
If you take a vitamin D supplement for strong bones, cancer prevention, or for your skin fitness do not take more the 2,000 iu a day. In fact, 600 iu is probably enough.
If you get all of your vitamin D from the sun or from foods like fish or fortified milk, then there’s no chance of you having too much in your system. For whatever reason the body does not have a toxic reaction to this form of consumption. Only the supplements will cause problems.
ps- Don’t forget to play the Skin Fitness Facts Sun Block Contest. Tomorrow is your last day to play!
This entry was posted on Thursday, July 31st, 2008 at 5:49 am and is filed under Nutrition, Total Skin Fitness. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
July 31st, 2008 at 11:14 am
Use of vitamin D in clinical practice.
http://www.ncbi.nlm.nih.gov/pubmed/18377099
This paper explains why it is probably necessary to take more than 2000iu/daily/d3.
In fact the suggested safe upper limit is 10,000iu/daily and that leaves a huge safety margin as 40,000iu/daily is needed daily over many months before 25(OH)D status is raised sufficiently to cause adverse events.
each 100iu of D3 daily will raise status 1ng or 2.5nmol/l
so 600iu will produce a 6ng 15nmol/l rise.
You will see the average UK adult status is 50nml/l and so 600iu will only make that 65nmol/l and as 80nmol/l is required to maximise calcium uptake they would remain vitamin D deficient.