In almost all South-east Asian countries in particular, I have noticed high levels of sucrose consumption so I am curious if Korea is the similar to SEA, or if either of these factors apply to either of you?
Koreans have famously long working hours, but as you are not there, those stress factors should likely not apply to you.
Another point to note is that I have heard adoption is at least as difficult as IVF, emotionally & financially speaking, although there's less physical pain. At least IVF can point you to where the problem lies (the knowledge of that can be disconcerting) providing you perhaps avenues to mitigate/ameliorate those factors, which could improve your overall QoL and also lead to better health-outcomes.