Why would there be any effect? After all, healthy babies are born also
in cultures, where people eat mostly (or only) spicy food.
In other words, the issue of spicy food and pregnancy is not more than
a myth. Having said that, naturally, if eating spicy food causes
sickness (to the mother) or heartburn (which it might), the mother
should avoid it.
Here are some articles on the subject:
BabyCentre: "Is it safe to eat spicy food when pregnant or breastfeeding?"
Donna Engelgau, "10 Pregnancy Myths", Discovery Channel Site,
"The Spicy Food Fraud
Spicy food will bring on labor. "For the most part, pregnant women can
eat just about anything, but there are certain foods that we tell them
to look out for, or to try and avoid," says Dr. Stone. Those include
very soft cheeses, unpasteurized cheeses and raw-milk cheese. Though
rare, they may contain a bacteria called lysteria that has been
associated with miscarriage or pre-term labor."
Ask a Midwife - Spicy Food
eatwell is the Food Standards Agency, Is it OK to eat spicy food during pregnancy?
(this is an official UK government site)
I hope this answers your question. Please contact me if you need any
clarification on this answer before you rate it. My search terms were:
["spicy food" pregnancy]