demographer - n. the person who studies changes (such as the number of births, deaths, marriages, and illnesses) that occur over a period of time in human populations

domestic – adj. of, relating to, or originating within a country and especially one's own country

resilient – adj. able to become strong, healthy, or successful again after something bad happens

biomedicine – n. medicine based on the application of the principles of the natural sciences and especially biology and biochemistry