What is the cause of falling testosterone in the west?

[Celto-Germanic]

https://uk.reuters.com/article/healt...16976320061101

NEW YORK (Reuters Health) - A new study has found a “substantial” drop in U.S. men’s testosterone levels since the 1980s, but the reasons for the decline remain unclear. This trend also does not appear to be related to age.

The average levels of the male hormone dropped by 1 percent a year, Dr. Thomas Travison and colleagues from the New England Research Institutes in Watertown, Massachusetts, found. This means that, for example, a 65-year-old man in 2002 would have testosterone levels 15 percent lower than those of a 65-year-old in 1987. This also means that a greater proportion of men in 2002 would have had below-normal testosterone levels than in 1987.

“The entire population is shifting somewhat downward we think,” Travison told Reuters Health. “We’re counting on other studies to confirm this.”


https://www.icenews.is/2010/05/17/te...#axzz4f1HF2xrr

Danish men's average testosterone levels had a huge drop between men born in 1920 and 1960.

The research, conducted on 5,000 Danish men by the Rigshospitalet Clinic, shows that those born in the 1960s have on average 14 percent lower testosterone levels than males from the 1920s. The study also discovered that the testosterone-binding protein SHBG had fallen by 26 percent in the same period, according to a report by MetroXpress newspaper.

“It’s a little frightening and thought-provoking that there is something affecting men’s sex hormone,” said Anna-Maria Andersson, the research study leader from the Rigshospitalet Clinic for Growth and Reproduction.

https://www.washingtonpost.com/news/...searchers-say/

These trends coincide with a decline in musculoskeletal strength among young men: In a 2016 study, the average 20- to 34-year-old man could apply 98 pounds of force with a right-handed grip, down from 117 pounds by a man of the same age in 1985


https://www.washingtonpost.com/news/...searchers-say/

Male sperm counts declining across the West (also an indirect measure of healthy testosterone levels)

https://www.prospectmagazine.co.uk/m...-men-fertility

Sperm counts have been decreasing for decades. Nobody seems to know why it’s happening, and not much is being done to find out, but we could be facing a public health disaster.

Now, however, this problem is becoming too severe to ignore. According to an analysis of many previous studies of sperm quality in men in westernised countries, published last year, sperm counts in men fell by a staggering 50-60 per cent between 1973 and 2011. That decline has been happening steadily over the years and there is no sign of the drop abating. When the media reports such numbers, it likes to cite dystopian fictions such as PD James’s novel The Children of Men and Margaret Atwood’s The Handmaid’s Tale, in which human reproduction has become almost vanishingly rare. There’s no reason to anticipate such drastic scenarios yet, but the issue may not be just about sperm and fertility. Low sperm counts are often an indication of other health problems, actual or incipient, including testicular cancer.

[TheMaestro]

Masturbation

[Insuperable]

Has primarily to do with processed, estrogen and sugar rich food and drinks and lack of naturally and healthy fat rich food, lack of physical and outdoor activity, fast faced and stressful life.

[Rafael Passoni]

Very interesting!