Can you elaborate? I’m assuming things go wrong when people don’t get enough sleep but I’m otherwise unaware of the dangers of changing the clocks.

NHTSA stats show increased traffic fatalities following the time change every year

I’m sure this is true and can be attributed to DST, but do we know if this would be worse than traffic fatalities caused by commuting in the dark during winter months without DST?

Interesting question. One would have to first account for changes in light conditions in the morning, and then changes in light conditions in the evening.

Daylight savings time can affect the heart, according to the American Heart Association[1].

[1]https://www.heart.org/en/news/2018/10/26/can-daylight-saving...

I mean, they did, last year, and we're done changing clocks now, at least in the US, after this last change. At least until what happened last time we tried this (in the 70s) happens, and kids start getting hit by cars while going to the bus in the dark all winter long. Though perhaps the glow of their phones will save them this time around.