India, Oct. 15 -- Unexplained weight loss is generally flagged as a health concern, especially when you have not made any changes to your diet or exercise routine. Unexplained weight loss also frequently appears on lists of possible cancer symptoms. So, why does cancer cause weight loss, and when should it be treated as a warning sign?ALSO READ: When can fatty liver become liver cancer? Oncologist reveals 7 signs that you should see a doctor

We asked Dr Anindya Mukherjee, senior consultant in medical oncology at ShardaCare-Healthcity, why cancer causes weight loss and when unexplained weight loss means you need to visit a doctor.

There is no need to assume the worst right away. The oncologist added that while noticeable and persistent w...