Many possibilities: Unintentional weight loss of 8 pounds can be caused by many things. Cancer, infection, stress, diabetes, or being more active and eating less could cause this. Whether or not to be more concerned also depends on what weight you are starting at. I would be more concerned if someone who initially weighed 100 lbs last 8 pounds compared to someone who started at 230. If other symptoms also, see doc.
Answered 11/9/2013
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