![](https://blogs.sas.com/content/sascom/files/2011/10/weighted-network2.jpg)
We have all heard many times about how much the US spends on health care each year. But let’s hear it again . . . because it is staggering: According to Centers for Medicare and Medicaid Services (CMS), in 2013, the national health expenditure (NHE) grew to $2.9 trillion. That