Changing clocks twice a year is harmful and unnecessary. However, if we stop changing our clocks, we have a choice: to stay on Daylight Saving Time year-round, or to revert to Standard Time year-round.
While permanent Daylight Saving Time may sound like a great idea, it would create very late sunrises in the winter. Scientists who study the circadian system have stated how this would disrupt sleep and increase the risk of cancer.
Society for Research on Biological Rhythms
“The scientific evidence presently available indicates that installing perennial Standard Time (ST, or ‘wintertime’) is the best and safest option for public health.
ST will be healthier than DST in terms of sleep, cardiac function, weight, cancer risk, and alcohol- and tobacco consumption”
This website supports ending Daylight Saving Time and reverting to Standard Time year-round.