Women smell better when ovulating. Feb 2012

How variation in our natural body odour could put pay to the perfume industry. Whether healthy faces belong to healthy people. And I finally turn self-help guru and dish out some advice on how to stop your one night stands demanding a wedding ring.

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"Helen suddenly remembered that it was day 23 of her cycle." New research by Kelly Gildersleeve shows that women's body odour is slightly more attractive around ovulation, and slightly less attractive a few days later, when fertility is low.

The articles covered in the show:

Gildersleeve, K. A., Haselton, M. G., Larsen, C. M., & Pillsworth, E. G. (2012). Body odor attractiveness as a cue of impending ovulation in women: Evidence from a study using hormone-confirmed ovulation. Hormones and Behavior, 61(2), 157-166. Read summary

Gray, A. W., & Boothroyd, L. G. (2012). Female facial appearance and health. Evolutionary Psychology, 10(1), 66-77. Read paper

Jonason, P. K., & Buss, D. M. (2012). Avoiding entangling commitments: Tactics for implementing a short-term mating strategy. Personality and Individual Differences, 52(5), 606-610. Read summary