OK, I did just that. The statistic of 5% increase in heart attacks in the three days following the Spring time change was seized on by the media with characteristic bulldog intensity. If you trace it back to its source, it is from a study in Sweden, of Swedish people. This is a country where the entire nation fits within one time zone. It is also a nation where in the dead of winter, in its most populated regions, they have about 6 hours of daylight. Yet the media have reported as if those results represent the effects of the time change on a country with a much less severe sunlight differential from summer to winter and one that spans 4 time zones. Yet, most didn't report that the same study found a nearly equal decrease in heart attacks at the Fall time change. I question whether a similar study would reveal the same statistics for the United States, and even if they did prove to be the same, when the two changes are taken together, it appears that as many people are saved in the Fall as are killed in the Spring.