... and from your link, almost all the countries were over 20% in 1975 as well. Plenty of them have barely changed.

> but the rate is still up more than 20% since 1975. 18.5% for adults in 1975 vs 21.8% in 2016

Nitpick: a rise of 20% on that 18.5% would make it 22.2%

Edit: I'm also not sure why the 20% marker seems to be your cutoff for "having an obesity problem". Ethiopia's famous famine went from 1983-85, yet their obesity rate for '85 is 18.7%. That seems to be an awful thin line to walk, where 18.7% marks a famine and 20% marks obesity problem.

Similarly, the Second Congo War went from 1999 to 2003 and almost 4 million people died, mostly from famine.. yet throughout that, the Democratic Republic of the Congo maintained obesity rates above 20% in your link.