In 1990 about 6-7 percent of HS students were obese which is just above the historic norm of 5 percent.  By 2000 half the states had at least 10 percent obese.  Today every state has 10 percent obese and the usual suspects are now over 20.  Just my own observation more kids have got much fatter in just the last 2 or 3 years. You got that right about something spectacular is going to hit over the next 10-20 years.  Almost all of the research right now on obesity and its risk are done with people that did not change species until adulthood and usually 30s+.  In this population, problems seem to take about 20-30 years to show up.  I suspect you will start to see problems even sooner with the always fats. So this first gen of fats in their mid 30s are due for issues basically at most 10 years and probably sooner.  The current gen of kids they will be shotting insulin by their 30th birthday.  Now is the time to invest in companies that make Metformin.