Sperm Counts Decline of 50% since 1973, more so among older men, and yet…

Here’s the gist of what I’m going to say here:

  • Over the last 40 years male sperm count has decreased by 50% in all industrial nations and it keeps going down.
  • 15% of couples are unable to have a baby (are infertile).
  •  Half the time a couple can’t have a baby male infertility is involved.   30% of the time it is due to male infertility, and 20% of the time due to a combination of BOTH male and female infertility.
  • Because of decrease sperm count, men over 40 are 30% less likely to conceive a child then men under 40.
  • Despite this, men continue to date younger women, and mate with younger women.

Men are coupled with women who are 2.3 years younger then them, on average.  Two thirds of coupled men are with a woman at least a year younger. (1)

Men in their late 40s look for online dates most frequently among profiles of women from 20 to 24.   In contrast, as women get older they look for men their own age. (2)

Infertility is defined as the inability to achieve pregnancy after one year of unprotected intercourse. An estimated 15% of couples meet this criterion and are considered infertile, with approximately 35% due to female factors alone, 30% due to male factors alone, 20% due to a combination of female and male factors, and 15% unexplained.(3)

Men over 40 are 30% less likely then men under 40 to conceive a child, based on a study of 8,559 pregnancies over a 12 month period.

Based on a study of 315 patients, men who have been exposed to common chemicals known as parabens have lower testosterone levels and more sperm that are abnormally shaped and slow moving, according to a study that suggests these ingredients may contribute to infertility. Parabens are found in many common soaps and detergents.  (4)

Based on 185 studies from 1973 to 2011, there was a steep decline of more than 50% in both sperm concentration and total sperm count among men from Western countries. The researchers also restricted the analysis to studies after 1995 and reported that the decline does not appear to be abating. The new report reveals that sperm counts among men in Western countries, including men in North America, Australia, New Zealand and Europe, have dropped more than 50% in less than 40 years. Sperm count is currently considered the best measure of male fertility. (5)

(1) US Census data

(2) OK Cupid data

(3) Kassem Faraj; Chief Editor: Edward David Kim, MD, FACS et al. Male Infertility, in MedScape. Jun 07, 2016

(4)  Joanna Jurewicz; Michał Radwan, et all. Human Semen Quality, Sperm DNA Damage, and the Level of Reproductive Hormones in Relation to Urinary Concentrations of Parabens. Journal of Occupational and Environmental Medicine. Publish Ahead of Print():, JUL 2017

(5) Hagai Levine Niels Jørgensen Anderson Martino-Andrade Jaime MendiolaDan Weksler-Derri Irina Mindlis Rachel Pinotti Shanna H. Swan. Temporal trends in sperm count: a systematic review and meta-regression analysis  Human Reproduction Update, 25 July 2017https://doi.org/10.1093/humupd/dmx022

Some citations in this blog were gathered from an article by Mona Chalabi, data editor of The Guardian, in the NYT,  Oct 1, 2017, Sunday Review Page 2.

94 thoughts on “Sperm Counts Decline of 50% since 1973, more so among older men, and yet…”

  1. Pingback: ed pills online

  2. Pingback: dissertation assistance

  3. Pingback: zithromax capsules australia

  4. Pingback: law thesis

  5. Pingback: neurontin gel

  6. Pingback: zithromax 500 mg for sale

  7. Pingback: propecia and alcohol

  8. Pingback: order cheap essay

  9. Pingback: buy ceftin

  10. Pingback: cheapest cialis 20mg

  11. Pingback: cialis on line new zealand

  12. Pingback: ordering medicine from india

  13. Pingback: neurontin tolerance

  14. Pingback: glucophage metformin

  15. Pingback: too much paxil

  16. Pingback: plaquenil stock

  17. Pingback: ed pills for sale

  18. Pingback: cialis from canada

  19. Pingback: canadian pharmacy drugs online

  20. Pingback: viagra no prescription

  21. Pingback: cialis with dapoxetine from canada

  22. Pingback: clomid uk

  23. Pingback: generic amoxicillin cost

  24. Pingback: tadalafil reddit

  25. Pingback: can i buy metformin over the counter in australia

  26. Pingback: propecia generic finasteride

  27. Pingback: vardenafil

  28. Pingback: pills for ed

  29. Pingback: how do you take levitra

  30. Pingback: natural ed remedies

  31. Pingback: prescription medication without a prescription lasix

  32. Pingback: online drugstore pharmacy

  33. Pingback: canadian pharmacy world coupon

  34. Pingback: pharmaceutical online

  35. Pingback: cialis on ebay

  36. Pingback: find cheap cialis online

  37. Pingback: cialis samples free

  38. Pingback: cialis with effexor

  39. Pingback: original cialis low price

  40. Pingback: viagra 100mg

  41. Pingback: chris rock i think i love my wife viagra scene

  42. Pingback: ways to start a tinder conversation

  43. Pingback: viagra e droghe

  44. Pingback: viagra for womens where to buy

  45. Pingback: lisinopril 12.5 mg price

  46. Pingback: how much is lisinopril 20 mg

  47. Pingback: completely free dating co uk

  48. Pingback: cialis discount card cvs

  49. Pingback: when does generic cialis become available

  50. Pingback: cialis online daily

  51. Pingback: cialis 20 mg tablets

  52. Pingback: which is safer viagra or cialis

  53. Pingback: online pharmacy store hyderabad

  54. Pingback: cialis black pills

  55. Pingback: good canadian pharmacies

  56. Pingback: how to buy cialis online uk

  57. Pingback: best price prescription drugs

  58. Pingback: buy cheap cialis uk

  59. Pingback: buy cialis tadalafil tablets

  60. Pingback: cialis in europe

  61. Pingback: ambien without a doctor's prescription

  62. Pingback: valtrex best prices

  63. Pingback: best online pharmacy reddit

  64. Pingback: cheap erectile dysfunction pills online

  65. Pingback: ed online pharmacy

  66. Pingback: cheap viagra online

  67. Pingback: buy doxycycline

  68. Pingback: viagra cost per pill

  69. Pingback: ed solutions

  70. Pingback: cytotmeds.com

  71. Pingback: canadian online drugstore

  72. Pingback: levitra without a doctor prescription

  73. Pingback: 5mg prednisone pill for dogs

  74. Pingback: hydroxychloroquine fda approval

  75. Pingback: buy ivermectin

  76. Pingback: what is dapoxetine

  77. Pingback: plaquenil 400mg

  78. Pingback: cost of plaquenil uk

  79. Pingback: alternatives to dapoxetine

  80. Pingback: ivermectin uk

  81. Pingback: ivermectin lice oral

  82. Pingback: stromectol drug

  83. Pingback: hydroxychloroquine coupons

  84. Pingback: viagra vs cialis bodybuilding

  85. Pingback: diabetes and ed

  86. Pingback: where to buy viagra online

  87. Pingback: buy generic 100mg viagra online

  88. Pingback: cheapest generic cialis australia

  89. Pingback: cheap generic cialis

  90. Pingback: hydroxychloroquine coronavirus successes

  91. Pingback: hydroxychloroquine price walgreens

  92. Pingback: order plaquenil

  93. Pingback: cialis deliver next day

  94. Pingback: how to buy cialis us

Comments are closed.

Scroll to Top