# Men’s Average Testosterone Levels Have Halved in 50 years

> **Open Intelligence Dossier** · First detected: 2026-07-08 20:07 UTC · Category: Health

## Executive Summary
A global study indicates that average male testosterone levels have decreased by approximately half over the last 50 years.

## Intelligence Brief
An international study reports a 54% decline in average testosterone levels among men over the past five decades. This trend has prompted discussions regarding a potential male reproductive crisis, with some reports linking the decline to rising obesity rates.


Coverage from outlets including The Guardian, The Jerusalem Post, and The Independent highlights the scale of the findings. Discussions have also broadened to include the concept of 'manopause' and the physiological shifts men may experience after age 40, as noted by publications like the London Evening Standard and Firstpost.


Future developments hinge on further scientific assessment of the causes behind these hormonal changes. While researchers emphasize the existence of the decline, coverage does not yet specify the long-term impact on global health or potential medical interventions.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| The Jerusalem Post | Male fertility crisis? Israeli global study finds 54% drop in testosterone levels over five decades | [Source Link](https://news.google.com/rss/articles/CBMiZ0FVX3lxTFA3SHhXR1k3cS02X3U2ei1DOXZ3UlZrVERqQUpKdmZCZlVkNFZXTTlPTW1oVXJfOGxNQ3FUYjRpTjRrQzVWOHpET243bjYxYkVSTURldWxGTWZhUlB6XzY1UmxtVDJZOHM?oc=5) |
| The Independent | Men’s testosterone levels have fallen by half in last 50 years, scientists warn | [Source Link](https://news.google.com/rss/articles/CBMimAFBVV95cUxPZU1EUW1zSzg1VkZOYXN6TWtOS1VhQ1pLRVlwZldZTGhZWk1YQ2c1NGdfM3JVdjhjbmVzTE5kODQ4MkJ1RWR2eVNocmpmcEUwU1RDYllJZ3NDWkNXQ3IwemRnZGtFQ1g1c1FBWEdFVlRnbHNWSG12UE52Q3B1ZzJTRmw2Z3g5WkgxMjdmX2JPQmdDd1dIbHhEeA?oc=5) |
| The Guardian | ‘Spermageddon’: is the world facing a male reproductive crisis? | [Source Link](https://news.google.com/rss/articles/CBMiswFBVV95cUxQWnpGRWtZU3FqWEltNTQzNzJkdDZjdjBFUFJMckVfWVl6MU9pNXItdHBENWZ3amVZZXh1b1p1eERsM3BJUDVuMDUzSlFSSnpfX1loV1V6emdMY1lESi1NX2kwM0piSzVQdWctWGUtN2tTVW9tOHluOVVmUzdScjhhVW9vRkpIUVRCZGJncVZCa0w2M05IY0JRY29LZ2xWMU1fOGROV3BxeXZVWnhjeXpIUi10UQ?oc=5) |
| The Eastleigh Voice | Men's testosterone levels in decline amid rising obesity, researchers warn | [Source Link](https://news.google.com/rss/articles/CBMitgFBVV95cUxOb0tpNjhwZFR4c2J1ejFCellqQmR2TFBOWlJUUGtMM010ZnV6MDlNYU9EbGZvNlpDX3QwZmFNV1k5YVpaZWVlYlFScmwwTEtfZm1TLUpYYlZRUXE0MmR4NGprUGtNRlNhbmVLQkpHS2Ywc21KX3VrblZFWm9sSlQ5ZjJZSTJLYkpmVTEtUjZHdmF4TXUyNjZSLWt0cy1TaHgxX0lGVERZeC1pSnJfTGxuWWV0eVFVUQ?oc=5) |
| American Institute for Boys and Men | AIBM | Testosterone, fatherhood, and what it means for masculinity | [Source Link](https://news.google.com/rss/articles/CBMijwFBVV95cUxNS0RFUkRrVE5NbmNfS1lPdVQ4YjFfeUNES3RYMkdRaUd6U0VpcExUWFNCZE5zM3RoNy1yWkdST1VHTzVDdU41T0ZuX1BNYXBMdGlFRDc2c0lTZC1PelhaWVlWLWxTRHJaNWR4S2ZsWjJmYXdEdUw4RWpPRFFRdWJPcEk0eEE4Yk9rNTBPV2pURQ?oc=5) |
| 동아사이언스 | Global testosterone levels in men fall by half over 50 years | [Source Link](https://news.google.com/rss/articles/CBMiT0FVX3lxTE16RVU5eHpaeGNIV2NZVmpBN054VDc3Z2ZHcjBVcnFxM0gxd3lQNk9iMWhUVHVfSnZyckhQZmNuZml5RUhXMGIxRkZGS29USnc?oc=5) |
| The i Paper | Why everyone is suddenly talking about testosterone – even in the White House | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxPdkNrNDcwU05hMUR0eFcxMjRMMGVxNXlIcWVtZzIxUjBmckpVb1gtUFdRQ2VXbzE4aU5CUngwcUF6NzQxLWFja0lWWU1YSDRzMDhiOWRVWXA2TjJ1MEhHOXJZLWtjM09wd3FaRy1Yb2hOeC05OGVRSFlINEZyS1pCdkp0ZjlLR0Y2SzhQZnVSM0NLV3M?oc=5) |
| Inshorts | Men's average testosterone levels have halved in last 50 years: Study - To read more from the study - Inshorts | [Source Link](https://news.google.com/rss/articles/CBMisgFBVV95cUxQLWZ4YzkxYmxwVEFwc2Y0d3lubS1PWnZTTUotbTlaQXNXa21oeF9fTDBHZ2NoZGRHbXZ0UzljVDV1SVdLZUNQU2N5NUFZOWJheGNKVklHcTFDZUVZc0NpV0VqZVJkLWJTSUZQaEQxVGI4R2t4enJiOFdjWTNsZVBfUV85VHFpRFdwZXNLVnZJZTlCUkNGNUVfVDNFX3NzZVg3QmJqZkJMTUNEZ2pKRHdsR0Vn0gG3AUFVX3lxTE1RR3pUaGM1NHVXWjg1RXUwRjlGOEczU29LbEJTY1ppLW9uRU53Y2VLcE9mMzNRdG9DMmc5X3EzZVptQlJLOXNmRm5KYXlXSkdfaEQ4Z1JJMTdackpDcjd2ems1YmltVzl2UWJxNWd5UmZkRDVhckJSZGF1amlUUGltdlNMM0hCSDBzd1MzMmhyaS1IS2k0bFBwU2NnbG5EcTJ) |
| IOL | The midlife software update: Yes, men go through menopause too | [Source Link](https://news.google.com/rss/articles/CBMisgFBVV95cUxPVlpldkEtNlNSY2ZEemdfTF9YUjN1QU9kMTVoUzNZWWVTRW1IWldOeGdua2YyVFdWb3l6aG1LWE5vNmJuU2NTLS1Cc282SXVpRnd2YXZiUHdiNW1XcjNUckhicXVLVVIzWWRhMXMzV1dqeGpuRXRjRGc3bU9nWldKM0JuRG1HQm5VX3I5SVZKdE9qUHdkdWhySFp6NlAzMm81cDE4SVkxbmJ0SzNmZXpNdEFR?oc=5) |
| The Star | Do men undergo menopause too? | [Source Link](https://news.google.com/rss/articles/CBMiiwFBVV95cUxNR1lGWl9Ybm82bFQ3X2lXY3FEdlJuVlA3S1pzanhMbXBRVDNTZUh6TmNaLURkdjZYNFZBOU9VaFFPUkhTWXhmQmh4eUVobl9VTHVZdEJlRVFaclkydTlmRkpqeVJWSmN4cXdoOS04Y2c5ekxzUEFuSmNBSS0tcEZscVF1enNJZFgxU2hB?oc=5) |
| ZME Science | Men’s Testosterone Levels Have Fallen by Half in 50 Years and Scientists Are Worried | [Source Link](https://news.google.com/rss/articles/CBMihwFBVV95cUxOdzJlRmV4MVdjc0d5MDFFQXJHNEdnUDVYQTU2RXFXSjV4ZDVTQURrTWdnME4yY3RUeUdpaXFBWU90WWNod0JrSUtmWlNYeFY0TVBTNHhxekpOUmpReENOM2Eta0NPRzFrUU1BWHFxeFA2OGt1eVpFSTBaVkZOajRISHQwMVktVTg?oc=5) |
| Firstpost | Is 'manopause' real? Doctors explain why some men experience hormonal changes after 40 | [Source Link](https://news.google.com/rss/articles/CBMizgFBVV95cUxOQ2M1RU0tbHBMVkRvb2wtRWFvcEJwMVdZMmxXZEY5ZGplejIxOGlzeUFadzdZTGpkbVRPU1E3QXdCLWZrcUJLRFJVS3FESEZmSWZFWlVYR3FCQjAtb1oyM01UMHJWekZBMVluMFg4dFZWWnVvU0QtWm1sTjl1MU9JN2NfeVFpWjNVeVluQTg0TmRFbE9oeUxBaUFRMTdfaVh6MmozNWJJcTJZZ01zd3FKUjZscjVVZHJGN2pOWlpCY0xBVENjX1lLSWZJRkhJUdIB0wFBVV95cUxPWjU1Vk53X1cwNXpqNU9CVTZ0SWR5YVBZTkdqRWo5bXBtRDFVX0hkcV9rMmp4T3pOeXl2b19YeXFFSmtMMGhvS3ZEeHEtSjM5NFQ3MXR1T1RSbzYyX3NNdlN3RWoyMjllZkg2OGJsNFJXazZCa29LVUdYMHRxMzQ4dzRPV01) |
| 매일경제 | Studies have shown that the average level of testosterone, a male hormone, has decreased by nearly h.. | [Source Link](https://news.google.com/rss/articles/CBMiS0FVX3lxTE5nb1NscTNKcnNtQVlQdTZtYWowRkg4RTA1ZmpNbEpuV1NMcEVTSmJXNUVMd0lHRGdTLVA0NHBPRDgxSFU0X0gzajd6QQ?oc=5) |
| London Evening Standard | The manopause is real: the hormone problem affecting millions of men | [Source Link](https://news.google.com/rss/articles/CBMirAFBVV95cUxOVEtadE42eG9KTU5memN6NENaM1pJdnFtNnAzYzRLOUllWEdWTmpxbzgtX0F4VFJfWlhrU0pDUTNGekN6ZHhiTmU0RzJEUkFuWVkzLVFiQTdlNTFIZDVKTmhrZ3VTakkxaXQ2LThFNk5TQlNqV2hHUFFXd0hBcE5wOXZIcktPemowcVRQMHdxemx2eXRDdGZSYW1IaHZQWE9FeGtacGxzd0ZCdXlj?oc=5) |
| The Guardian | Men’s average testosterone levels have halved in last 50 years, say scientists | [Source Link](https://news.google.com/rss/articles/CBMiwgFBVV95cUxQSDZDVzFkLVF4cGUzako4S1pGcHBMVGNIcEpqSmp2LTV1dHoyZ2F6dm1zeTJDNHNRWU9NRGY1VFBVUG9EYW0ySVZPWFFyTFBtU3dQcDlwRXJfWndvYTBxb3ZSQjYzRG1jYW41YmRKOVVpNzBSSEs0amFCSDJLU05GYVZWRjRzUGg2U21xU2xoejBWeFQ3cVlHc1F6SG5MZUxLVW9sSkRrTkY3MDJFMjZxS2JsZlNuTUc3MGFDTDhtYjd2QQ?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-08/men-s-average-testosterone-levels-have-halved-in-50-years*