What causes the drastic weight loss which often precedes (and can indicate)a cancer diagnosis?

quercus questioned:

Often people get a drastic consequence loss only previous to life diagnosed including Progression and in detail hasty consequence loss is a Progression danger indicate. Since all cancers are not gastric in origin, yet the consequence loss seems to be ordinary where on earth in the body the Progression eventually turns out to be, what is it including the intention of causes consequence to drop off?

What causes the drastic weight loss which often precedes (and can indicate)a cancer diagnosis?

quercus questioned:

Often people get a drastic consequence loss only previous to life diagnosed including Progression and in detail hasty consequence loss is a Progression danger indicate. Since all cancers are not gastric in origin, yet the consequence loss seems to be ordinary where on earth in the body the Progression eventually turns out to be, what is it including the intention of causes consequence to drop off?