It is cause for concern when you lose weight when you aren't dieting; it can often be the cause of a medical condition. If there is no obvious explanation for your sudden weight loss, it is best to see your doctor. As a scale, doctors will usually clarify significant weight loss to be more than 10% of your healthy body weight. When your liver is not functioning properly due to liver cancer, this would often be the primary cause of weight loss, but also, you may not feel hungry so therefore are not eating as much and not receiving foods nutrients.

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