Does too much sleep cause depression?

Presented at Ste. Anne’s Hospital 2006-5-9 and on 2006-6-1. Some proverbs about sleep: “One hour’s sleep before midnight is worth two hours after.”
—John Rays (1627-1705): A Compleat Collection of English Proverbs, 1670 “Plough deep while sluggards sleep.”
—Benjamin franklin (1706-1790): Maxim prefixed to Poor Richard’s Almanac, 1757 “The early bird catches…

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