Sperm counts among western men have halved in last 40 years – study

The Guardian, Wednesday 26 July 2017 

Sperm counts among men have more than halved in the last 40 years, research suggests, although the drivers behind the decline remain unclear.

The latest findings reveal that between 1973 and 2011, the concentration of sperm in the ejaculate of men in western countries has fallen by an average of 1.4% a year, leading to an overall drop of just over 52%.

Little has been done to address the root of the issue, and sperm counts might also be an indicator of poorer health among men more generally.

Women’s Preferences for Pen1s Size: A New Research Method Using Selection among 3D Models

(Note; some spelling has been changed in this post to avoid automatic spam filters for email subscribers)

PLoS ONE 10(9): e0133079. doi:10.1371/journal.pone.0133079

Abstract

Women’s preferences for pen1s size may affect men’s comfort with their own bodies and may have implications for sexual health.

Studies of women’s pen1s size preferences typically have relied on their abstract ratings or selecting amongst 2D, flaccid images. This study used haptic stimuli to allow assessment of women’s size recall accuracy for the first time, as well as examine their preferences for erect pen1s sizes in different relationship contexts.

Women (N = 75) selected amongst 33, 3D models. Women recalled model size accurately using this method, although they made more errors with respect to pen1s length than circumference. Women preferred a pen1s of slightly larger circumference and length for one-time (length = 6.4 inches/16.3 cm, circumference = 5.0 inches/12.7 cm) versus long-term (length = 6.3 inches/16.0 cm, circumference = 4.8 inches/12.2 cm) sexual partners.

These first estimates of erect pen1s size preferences using 3D models suggest women accurately recall size and prefer pen1ses only slightly larger than average.

Access full text (open access) here 

New clinical guidelines on prostate cancer testing

December 2014

Long-awaited consensus guidelines on prostate cancer have been released.

The draft guidelines address prostate cancer testing, which extends from making a decision about whether to be tested, through to following a positive test result. Notably, they recommend against routine PSA screening and advise GPs to cease digital rectal examinations.

  • Draft Clinical Practice Guidelines PSA Testing and Early Management of Test-Detected Prostate Cancer (2014): the draft guidelines can be found here
  • Further related guidelines can be found here