A 1990 study of life expectancy of teenagers in Harlem reported that 15-year-old girls in Harlem had a 65% chance of surviving to the age of 65, about the same as women in Pakistan. Fifteen-year-old men in Harlem, on the other hand, had a 37% chance of surviving to 65, about the same as men in Angola; for men, the survival rate beyond the age of 40 was lower in Harlem than Bangladesh. Infectious diseases and diseases of the circulatory system were to blame, with a variety of contributing factors, including consumption of the deep-fried foods traditional to the South, which may contribute to heart disease.