This would be an example of classical conditioning. This is almost exactly what Pavlov did with his dogs.
it has to have no artificial ingredients
Cardiovascular System
In addition, the blood vessels that direct blood to the large muscles and the heart dilate, thereby increasing the amount of blood pumped to these parts of the body and elevating blood pressure. ... This long-term ongoing stress can increase the risk for hypertension, heart attack or stroke.
If the parents are less stressed because of there life experience? and it would be like being raised by your grandparents. if they are less strict on there children because of this factor?