reporter: annegret raunigk is still working as a teacher but will retire at the end of summer. that is when the four babies are due. the children were certainly -- will certainly keep her busy. anchor: we want to talk about this with an ethicist of religion and medicine. looking at the grandmother who is expecting, she is losing -- see is -- she is youthful looking. what is the problem? people have this feeling something is wrong here. is it the medical risk? guest: there are a set of risks. no doubt about it. one of the questions being asked and rightfully so is who is being put in danger? it doesn't seem there is any risk directly for the mother. there are certain increased risks, but these can be kept under control by sufficient oversight. the bigger question is about the babies or the fetuses. a quadruple pregnancy is a fairly high risk pregnancy, so there is an issue here. anchor: it would be a high risk regnant see at any age. guest: exactly. but this is something that was sought after. anchor: let's talk about the ethics and the rules. this in vitro process was not possi

annegret raunigk is 65, a mother of 13, a grandmother of 7. to give birth to quadruplets. i'm not really afraid, she told german tv. i'm very fit and i don't know why this should change now. you can never know, you can be 20 and something happens. 40, you never know. the single mother already made headlines ten years ago when she had her youngest at 55. she says this pregnancy the results of artificial insemination using donor sperm and eggs was a gift to 9-year-old layla who wanted a younger brother or sister. cuddling up to her mom's pregnant belly at a doctor's checkup, layla says she only wanted one but they'll keep the rest. the school teacher who was single had made headlines again since the news broke. people baffles, worried, and sometimes angry at the aging mother. embryo transfer should be discouraged or denied to any woman over the age of 50 with underlying issues and discouraged to those over 55 even without issues. the doctor is worried about premature birth. >> there are some 60-year-olds as healthy as 40-year-olds. and some 40-y