Here isone such study but it may be a bit complicated:
https://aacrjournals.org/cebp/...
Here is the quote that cites the above article:
"Permanent daylight savings time; however, is not recommended by the scientific community. Studies have shown that residing on the most western border of time zones, which is similar to being on daylight savings time, is associated with increased risks for cancer. Rather permanent standard time is the optimal solution."
https://utswmed.org/medblog/da...
