If I were born in a third world country where most people are uninsured and affordable or reliable healthcare is virtually non-existent, is putting a volunteering experience in that country during summer break (1 month) a good idea for personal statement? I did not perform any invasive procedures but I would say how I saw things and how I believed health literacy in such community is very important since it could help to know the basic measures such as hygiene and sanitation to prevent the spread of diseases for underserved communities. I want to emphasize that I lived in that country for 18 years before I moved to college. Is it a bad thing since it is about me volunteering abroad as I saw some posts saying volunteering abroad isn't judged favorably.
You lived there for 18 years, but you want to write about a 1-month volunteer trip? I'd rather hear about life there and learn about you as a person and how living there and the potential difference in culture and how that shaped you than to read the same story from 300 other people who also do these mission-type trips. Is it worth a mention that you went back, sure if it fits in well, but what I mentioned will sound better to me compared to the things I read for others.