he study, published in the journal Cancer Research, found a reduction in the levels of a blood protein involved in angiogenesis when overweight and obese women experienced weight loss through diet and exercise.
Angiogenesis is the process by which damaged blood vessels are repaired and new blood vessels are formed.
Without oxygen and nutrients, both healthy cells and cancer cells cannot survive. These cells send out signals, called angiogenic factors, and it is these factors that encourage new blood vessels to grow and cancer cells to grow into a tumor.
Tumors are unable to grow beyond a few millimeters in size without a blood supply. However, once cancer cells stimulate the growth of a blood vessel, they can develop quickly.
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