There is nothing at all inexplicable about that. Access to very palatable and not-very-satiating (cal for cal) food will change behaviours over time, these behaviours are also inherited in familial environments, and compound since once someone is obese, it becomes increasingly hard to get not-obese. With micro-cultural behaviour change which favours obesity, we’re also seeing actual cultural changes toward acceptance and promotion of obesity-promoting behaviours, excessive eating among family and friends, increasingly sedentary lifestyles (lord knows the last two years will have accelerated that), forgetting how to cook, or deciding to not bother cooking the sorts of foods which are satiating and lower cal.
There is nothing at all inexplicable about that. Access to very palatable and not-very-satiating (cal for cal) food will change behaviours over time, these behaviours are also inherited in familial environments, and compound since once someone is obese, it becomes increasingly hard to get not-obese. With micro-cultural behaviour change which favours obesity, we’re also seeing actual cultural changes toward acceptance and promotion of obesity-promoting behaviours, excessive eating among family and friends, increasingly sedentary lifestyles (lord knows the last two years will have accelerated that), forgetting how to cook, or deciding to not bother cooking the sorts of foods which are satiating and lower cal.
For what it’s worth, I think https://www.livenowthrivelater.co.uk/2021/09/is-the-obesity-epidemic-a-mystery-part-1/ is a good response to SMTM arguing something similar (that the problem is hyperpalatable foods).