Healthcare stocks to buy are booming in the U.S. due to the nation’s aging population. Spending on healthcare in the U.S. now totals $4.4 trillion, or$13,493 per person, each year — more than any other country on earth. The U.S. continues to lead in both quality of medical care and healthcare innovations, developing cutting edge technologies, pharmaceutical products and surgical procedures.For all these reasons, one might assume that all healthcare stocks are thriving — but not so. The S&P Health Care inde ...