What do you mean by unintentionally weight loss?
Unintentionally is a non reasonable size of your body that causes suddenweight loss, it may includes many different reasons that rapidly reduce your weight. Stress is one biggest condition that welcome all kinds of disease to itself.
What are the causes of rapid weight loss?
There are many causes for the rapid weight loss like you are dealing yourself with diabetes (mother of all disease), certain type of chemotherapeutic agents that you are taking regularly, chronic diarrhea, AIDS, ulcer, lung cancer, tuberculosis and may be the malnutrition.