Christopher Ryan

Christopher Ryan

Christopher Ryan, Ph.D. is a psychologist, teacher, and author. Together with Cacilda Jethá, M.D., he is a co-author of Sex at Dawn: The Prehistoric Origins of Modern Sexuality (to be published by HarperCollins in 2010). They live together in Barcelona, Spain.

His PT blog is Sex at Dawn.

Saybrook University
Pursue advanced degrees in Mind-Body Medicine and Psychology. Learn more.
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Kyolic Formula 109
Kyolic Formula 109 promotes healthy blood pressure and reduces stress by supporting relaxing.
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