Hi my doctor told me my vitiam d count is real low and wants me to take some med once a week for 8 weeks and then retest me. What does a low vitiam D level mean. Thanks

It means you are more likely to get colds, and also may be more susceptible to getting cancer. Some studies indicate that good levels of vitamin D cut the rate of certain cancers in half. The Canadian Cancer Society has recommended that all Canadians take vitamin D supplements, for example.