Anthropology vs. International Affairs?

I need to declare a major quite soon and am trying to decide between Anthropology or International Affairs with a concentration in Global Human Development. Here’s the thing, I want to go to grad school for Global Public Health. I know, that probably sounds a bit random, but my school doesn’t offer Public Health or anything similar really, so I figured Anthropology or International Affairs may give me some sort of good foundation for global public health, since those majors are involving culture and development, two things that affect public health greatly.

Any advice is appreciated!