Lots of people say that you should delay your Social Security as long as possible, possibly even deferring all the way to age 70. But for millions of Americans, that could be terrible advice. In fact, there are some very real reasons why claiming as early as age 62 may make sense.

Goldman Sachs just published "The New Economics of Retirement." I'll give you some highlights.

If we want to grow our purchasing power over time and not just maintain it, we have to invest accordingly.