Sex-Drive Killers in Pictures: Stress, Kids, Low Libido, and More

IMAGES PROVIDED BY:

(1)   Somos/Veer
(2)   Radius
(3)   Uwe Umstätter/Mauritius
(4)   Fotosearch Illustration/Photolibrary
(5)   Yellow Dog Productions/Taxi
(6)   Roy Morsch/Getty
(7)   Rubberball Productions
(8)   Robb Kendrick/Aurora
(9)  Rob Melnychuk/Digital Vision
(10)  David Sacks/The Image Bank
(11)  Getty
(12)  Jean-Pierre Pieuchot/The Image Bank
(13)  Ryan McVay/Thinkstock

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