Comment by lonelyasacloud

Speaking from experience diet back then was pretty shit, what's changed the most is the levels of physical activity.

Many jobs used to involve physical labour, huge number of us now are desk jockeys. Decades of prioritising motorists and increasingly large vehicles over active transport mean walking, cycling are a fraction of what they used to be [0].

[0] e.g. https://ajph.aphapublications.org/doi/pdf/10.2105/AJPH.2010.... , https://la.streetsblog.org/2023/04/17/exactly-how-much-less-...