There have been reports of YouTubers I watch getting sick after eating food in third world countries. However, these countries are also home to a large number of people who do not get sick from eating the same food. I think this suggests that the locals may have developed stronger immune systems. What do you think?
It’s usually the water that makes people sick. When people from third world countries move to first world countries and live there for a couple of years, they will get sick too when they revisit their home country.
Yep. I’m in India and my friends who’ve moved out of the country are ill for the first couple of days when they come here for a vacation.