91–100 of 300 posts
Earlier quoted context omitted.
laptops can make your balls overheat and cause problems, I remember that being an actual problem.
Do people actually put laptops in their laps? My 12" ultra-portable sits on my desk at home/office. When commuting if I'm using it, it will sit on my backpack on my lap. My 17" laptop that is heavier than my desktop, stays on the kitchen table.
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Given that this decline apparently started in 1973, I'd say they're probably not the deciding factor.
I feel like something happened in the early 70s that just made progress slow way down. I keep seeing bad trends start in the 1970s - like stagnant wage growth (1971), increased inequality (1971) etc...
Earlier quoted context omitted.
laptops can make your balls overheat and cause problems, I remember that being an actual problem.
Do people actually put laptops in their laps? My 12" ultra-portable sits on my desk at home/office. When commuting if I'm using it, it will sit on my backpack on my lap. My 17" laptop that is heavier than my desktop, stays on the kitchen table.
People offering human-centric explanations like cell phones: Note also that the sperm quality of dogs has decreased 30% since 1988. https://elpais.com/elpais/2016/08/09/ciencia/1470755907_2432... https://www.nature.com/articles/srep31281 This suggests its more environmental, chemical, diet-based, etc.
Perhaps global warming could play a role. It affects reptiles a lot (limiting fertility, making it so that there are more females than males, turning males into females, etc.)
>In contrast, no significant decline was seen in South America, Asia and Africa.
Presumably on average these regions are also seeing similar temperature increases. I'd think that whatever the cause is, it's not something that is affecting people on a global scale.
Also, temperature-dependent sex determination is only seen in a few species, and not in mammals as far as I know: https://en.wikipedia.org/wiki/Temperature-dependent_sex_dete...
People offering human-centric explanations like cell phones: Note also that the sperm quality of dogs has decreased 30% since 1988. https://elpais.com/elpais/2016/08/09/ciencia/1470755907_2432... https://www.nature.com/articles/srep31281 This suggests its more environmental, chemical, diet-based, etc.
Perhaps global warming could play a role. It affects reptiles a lot (limiting fertility, making it so that there are more females than males, turning males into females, etc.)
People offering human-centric explanations like cell phones: Note also that the sperm quality of dogs has decreased 30% since 1988. https://elpais.com/elpais/2016/08/09/ciencia/1470755907_2432... https://www.nature.com/articles/srep31281 This suggests its more environmental, chemical, diet-based, etc.
Perhaps global warming could play a role. It affects reptiles a lot (limiting fertility, making it so that there are more females than males, turning males into females, etc.)
Earlier quoted context omitted.
laptops can make your balls overheat and cause problems, I remember that being an actual problem.
Do people actually put laptops in their laps? My 12" ultra-portable sits on my desk at home/office. When commuting if I'm using it, it will sit on my backpack on my lap. My 17" laptop that is heavier than my desktop, stays on the kitchen table.
My belief is that the primary cause is environmental chemicals, specifically Phthalates and BPA (and related chemicals). The science on this is fairly conclusive. We can show that these chemicals bind to estrogen receptors, that they're present in everyone's body, and that if you're acutely exposed to a higher dose, your testosterone goes down. In my opinion, these chemicals are having social and cultural effects bey…
Want an interesting read? Go to your city water providers website and read up on all the pollutants they are over recommended levels on. Then look at the pollutants they are over the legal limit on. We assume that the water in our taps is safe to drink but there are often a myriad of tests that our utility companies are failing. For example, I live in a relatively well to do suburb and my utility is over the recommen…
Earlier quoted context omitted.
What do you mean when you say that non-western countries are "exposed" to BPA as much, or more, than the US? There is a large difference between merely touching a product that has BPA in it and consuming BPA. Plasticizers in general are fat soluble and dissolve from a container into food quickly when heated. Which is why you shouldn't reheat anything, especially fatty foods, in plastic containers. In the West we re-h…
> In the West we re-heat everything in plastic containers. I didn't think this was as big of a thing in non-western countries. I live in the West and I do not have a recent memory of anyone reheating anything in a plastic container or treated can. I think I saw somebody heat up one of those Kraft Dinner individual portion cups once. How many plastic containers are even considered microwave safe?. I know there are thi…
Also: many people use "microwaveable" plastic containers/Tupperware in lieu of ceramic or glass, as it's cheaper and easier to store.
Unless this is adjusted for activity levels (western folks are extremely sedentary - especially in the US) and weight I am not sure it is interesting. Obesity is negatively correlated with male fertility[1] and 3/4 of the US is obese or overweight[2]. [1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3521747/ [2] https://www.niddk.nih.gov/health-information/health-statisti...
Countries with low obesity levels show the same trend [1]; just look at e.g. Denmark (18.2%) [2]. [1] https://www.ncbi.nlm.nih.gov/pubmed/10655308 [2] (PDF) http://www.euro.who.int/__data/assets/pdf_file/0006/243294/D...
Electromagnetic wave pollution perhaps?