Britva415
"Alabaster," my ass
- Joined
- Nov 19, 2022
- Posts
- 3,234
Thanks, I was going to do the same investigation.1 in 7,000 seemed rarer than expected to me, not more common. So I looked up the article in Wikipedia:
https://en.wikipedia.org/wiki/Rare_disease
Most countries classify a disease as rare if its incidence is < 1/2000. So incest is quite rare, even considering that only a fraction of such relationships result in pregnancy.
Examples of rare diseases which are more common than 1/7000 include:
ALS (Lou Gherig's/Stephen Hawking's disease)
Mesothelioma
Cystic fibrosis
Scarlet fever
Tay-Sachs disease
Pre-eclampsia