Baby is healed with first personalized gene-editing treatment

Does this mean when they grow up, their own offspring will also have this defect and require a correction? And, if so, does this mean it is now introducing this defective gene into our gene pool?

I know this is an issue with caesarean section. It is becoming more prevalent because those who require it are surviving, making it more likely to happen in their offspring.

> know this is an issue with caesarean section. It is becoming more prevalent because those who require it are surviving

You state this as a fact and I've heard it as a strong hypothesis, but I wasn't aware of much evidence to confirm it?

"The cesarean delivery rate increased from 5% in 1970 to 31.9% in 2016. This sharp increase can be attributed to various factors, including changes in maternal age, medical advancements allowing more complicated pregnancies to proceed, and evolving obstetric practices. In 2022, the United States recorded more than 3.66 million births, most of which resulted from spontaneous or induced labor. Labor dystocia remains the most common indication for primary cesarean delivery. Globally, cesarean delivery rates continue to rise, and reducing unnecessary cesarean procedures remains a priority in the United States, where 32.2% of all births in 2022 were cesarean deliveries."

https://www.ncbi.nlm.nih.gov/books/NBK546707/

"If this trend continues, by 2030 the highest rates are likely to be in Eastern Asia (63%), Latin America and the Caribbean (54%), Western Asia (50%), Northern Africa (48%) Southern Europe (47%) and Australia and New Zealand (45%), the research suggests."

https://www.who.int/news/item/16-06-2021-caesarean-section-r...

Note: Coincidentally, WHO's article I've linked is lamenting that Sub-saharan Africa only had 5% cesarean due to less availability of the procedure. It is their perspective that the increase in percentages is a good thing and indicates progress, instead of being concerning. And, they find Sub-saharan Africa's low numbers concerning, instead.

Side Note: I also found lots of interesting articles which I haven't posted here, about epigenetic side effects caused by caesarean deliveries like leukemia, illnesses and other genetic issues. But, that seems out of scope for your question. You can make a quick search and find these, though.

"A female-to-female familial predisposition to caesarean section was observed. It could be caused by biologic inheritance, primarily working through maternal alleles and/or environmental factors. The results imply that both mechanisms could be important."

https://pubmed.ncbi.nlm.nih.gov/18540028/

"Large-scale epidemiological studies indeed evidence that women born by C-section are more likely to deliver by Caesarean than women born vaginally, owing primarily to genetic rather than social factors."

https://www.pnas.org/doi/10.1073/pnas.1712203114