There are many medical reasons why people are born premature, but there is not a genetic cause so there is no affect to your future children. If the reason had a genetic foundation that may have an affect, but otherwise no affect.
Children with at least one stay at home parent do develop better long term abilities. http://www.youtube.com/view_play_list?p=F18EFC65580A7120
Oprah became pregnant after being raped at age 14. Her baby was born premature and died. She has not had any children after that.
Birth defects, low birth weight, premature labor, and the baby being addicted to nicotine after birth.
if they are mean, it can effect the children being hurt emotinally!
yes
Smoking of any kind inhibits the bodies natural abilities to heal itself. The body is a constant fight with the toxins being taken in on a daily bases. Smoking also is a source of premature aging.
our abilities to help other people
Oprah became pregnant after being raped at age 14. Her baby was born premature and died. She has not had any children after that. She is not married and currently lives with a man named Stedman. She helps many poor children. She built a school for girls in Africa.
It is theoretically possible for Dudley's children to inherit magical abilities, as magic can manifest in individuals regardless of their parents' background. However, since Dudley himself is a Muggle with no magical abilities, the likelihood of his children being witches or wizards would be very low.
it save children's/ or adults teeth so they are straightened and nice.
It is called a premature baby.
If the Tuner has an activated ability, yes, it can negate that. It cannot stop a monster 'being' a Tuner, nor affect a Synchro Summon though.