At the end of the day, it comes down to thermodynamics. On a physical level, that is 100% of what is going on.
The shifts have therefore been behavioral. Why are people eating to more?
Americans have been eating out more now than in the past. McDonalds wasn't always 24/7 and fast food restaurants weren't open late at night. In fact most restaurants closed by 11pm. People have been going out more to eat.
A contributing factor is working parents are working more hours than before. Hence less time to cook. Even at that, mother's that need to work aren't cooking dinner.
Kids are simply getting less exercise. Gym classes use to be held every single day for at least an hour and were taught to hussle. Now they are attending gym classes less and don't work hard.
People are getting less sleep than ever before.
There is also more misinformation out there on what controls weight than ever before. People will do silly things like blame genetics, their environment, their upbringing. What they will always refuse to do is blame their behavior.
The shifts have therefore been behavioral. Why are people eating to more?
Americans have been eating out more now than in the past. McDonalds wasn't always 24/7 and fast food restaurants weren't open late at night. In fact most restaurants closed by 11pm. People have been going out more to eat.
A contributing factor is working parents are working more hours than before. Hence less time to cook. Even at that, mother's that need to work aren't cooking dinner.
Kids are simply getting less exercise. Gym classes use to be held every single day for at least an hour and were taught to hussle. Now they are attending gym classes less and don't work hard.
People are getting less sleep than ever before.
There is also more misinformation out there on what controls weight than ever before. People will do silly things like blame genetics, their environment, their upbringing. What they will always refuse to do is blame their behavior.