Vitamin D (D3) acts as both a vitamin and a hormone in our body. We are still discovering all of the actions D3 is part of in our bodies. We do know that it is an important component to maintaining a healthy immune system. Most Canadians become deficient in D3 during the winter months as we do not get the correct angle of sunlight like we do in the summer months.
As vitamin D is a fat soluble vitamin, there is an upper limit to how much a person should take. This means that it is stored in the body and not eliminated right away. Too much can elevate serum calcium levels which may increase risk of kidney stones. Consult your healthcare practitioner to identify your serum levels before supplementing with more than 1000 IUD.
Tips for maintaing health while travelling are available here. Read this post to find out the difference between cold, flu's and allergies. For information about preventing allergies, check out this post. Tips for preventing colds and flu's can be found here and about preventing the spread of colds and flu's here.