Mohamed Saber
Mohamed Saber answered

Yes,
increasing maternal age increases the probability of more babies
conceived who have Down's Syndrome.  As shown above, the probability of
conceiving a child with Down's Syndrome increases dramatically with age,
and the average age of conception is increasing.

However, there are two other factors:

Mohamed Saber
Mohamed Saber answered

The lives of individuals affected by Down Syndrome are no less valuable than the lives of anyone else. It's unjust to impose one's own set of values regarding what makes life enriching upon someone else. Down Syndrome is an impairment of intelligence quotient, a set of specific tests designed by … Read more

Mohamed Saber
Mohamed Saber answered mardarious jones' question

Down is caused by all or part of an extra 21 st chromosome.  How much of the extra chromosome is present could affect severity, as could the way that person's extra chromosome reacts with the rest of his/her genome. The generic info on each chromosome codes for proteins, hormones, neurotransmitters and the like,  as well … Read more