In my family many suffer diseases of type VSD, a hypertonia, an arrhythmia....

[Nastik]

In my family many suffer diseases of type VSD, a hypertonia, an arrhythmia. Mum considers or counts, what is it our heredity.
Whether similar illnesses or diseases hereditary, obslovlennymi are considered as genetics?
And more. Whether my chances to be ill any of oncologic diseases if my great-grandmother (mum of my grandfather) has died of a cancer raise or increase?

[Sonja]

"Yes" and "yes". Predisposition to these diseases paredaetsja genetically, but you will be ill or not depends also on your way of life and other influences of medium (stress, for example).