Global health care spending continues to increase dramatically. is projected to reach $10.059 trillion by 2022. Factors impacting health care costs. life expectancy continues to climb—number of people over the age of 65 globally is more than 668 million, or 11.6%, of the total global population. winning the fight against communicable diseases non-communicable diseases (NCDs)—most prominently, cancer, heart disease, and diabetes—continue to grow.