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It is always comforting to the medical profession when new investigations confirm older observations. Such was the study of Ayas et al,¹ which found relatively more coronary events in women reporting either short or long sleep durations. Their study supports the 2000-year-old clinical experience of Hippocrates,² who noted: "Both sleep and insomnolency, when immoderate, are bad."

John G. Sotos, MD
Palo Alto, Calif

1. Ayas NT, White DP, Manson JE, Stampfer MJ, Speizer FE, Malhotra A, Hu FB. A prospective study of sleep duration and coronary heart disease in women. Arch Intern Med. 2003;163:205-209. FREE FULL TEXT 2. Hippocrates Adams F, trans. The Genuine Works of Hippocrates. Aphorisms: Section II. Huntington, NY: Robert E Krieger; 1972:295.

Arch Intern Med. 2003;163:1374.