First,to understand why dairy products might play a role in cancer, we need to re-call some of scientific facts.
Milk is produced by mothers to support the rapid growth of their newborns.
Mother milk contains plenty of protein, fat, and sugar (lactose), as well as dozens of hormones and other natural chemical substances that direct infants?growth and development.
But, milk are differs from species to species, generally to say cow's milk is for cow and quite different in its nutrient profile from human milk. However, humans began to consume milk taken from cows and a few other mammals and mother milk become
less important as we use cow's milk as alternative replacement.
When humans drink cow's milk, it causes some worrisome biological changes in the body, one of which is a rise in the amount of insulin,like growth factor I (IGF-I) in the bloodstream.
What is IGF-I?
IGF-I is a powerful stimulus for cancer cell growth.
In lab test , when breast cancer cells are mixed with IGF-I in a test tube, cancer cells grow rapidly.
When our body with higher levels of IGF-I in our blood are at significantly higher risk for prostate and premenopausal breast cancer compared to those with lower levels.
Researchers believe that milk may influence cancer risk is by increasing the amount of IGF-I in the blood. Individuals who have been diagnosed with cancer may be quite right to be concerned that milk drinking boosts IGF-I levels in their bloodstreams which can encourage cancer cell growth. Beside that, milk may cause other chemical changes in the body as well, some of which relate to specific types of cancer.
Generally speaking, these mechanisms relate not only to the likelihood that cancer will strike, but also to how rapidly it will grow and spread once it has occurred.
Summary :
Milk-drinkers have more IGF-I in their bloodstreams. IGF-I is a powerful stimulus for cancer cell growth.
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