my hypothesis: iced coffee
Puberty Starts Earlier Than It Used To. No One Knows Why
11–20 of 21 posts
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#12https://en.wikipedia.org/wiki/Endocrine_disruptor hyper-industrialization of the food industry is the reason why you are, and as a species you become something based on what you eat you change what your species used to eat, you evolve into something else that's chemicals and how evolution works
> you change what your species used to eat, you evolve into something else
That is definitely not how evolution works. First of all, evolution doesn't happen noticeably over one or two generations, which is the timeline we're talking about here. Secondly, show me how something affects fecundity or survival before we can even begin talking about its affect on evolution.
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#13Puberty starts earlier than it used to *for girls*. Which surely points towards plastics and phytoestrogens in food as being the much more likely cause than improved nutrition or obesity which would affects both boys and girls equally.
[deleted]
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#14Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race
by Shanna Swan, PhD
https://www.amazon.com/Count-Down-Threatening-Reproductive-D...
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#15Overcrowding. This is a known biological response to overcrowding. I’m sure all the endocrine disrupters in the water supply don’t help.
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#16Overcrowding. This is a known biological response to overcrowding. I’m sure all the endocrine disrupters in the water supply don’t help.
Why does it also happen in low-density rural areas?
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#17https://en.wikipedia.org/wiki/Endocrine_disruptor hyper-industrialization of the food industry is the reason why you are, and as a species you become something based on what you eat you change what your species used to eat, you evolve into something else that's chemicals and how evolution works
> you change what your species used to eat, you evolve into something else That is definitely not how evolution works. First of all, evolution doesn't happen noticeably over one or two generations, which is the timeline we're talking about here. Secondly, show me how something affects fecundity or survival before we can even begin talking about its affect on evolution.
Survival is not a requirement. Random chance is fine.
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#18Earlier quoted context omitted.
> you change what your species used to eat, you evolve into something else That is definitely not how evolution works. First of all, evolution doesn't happen noticeably over one or two generations, which is the timeline we're talking about here. Secondly, show me how something affects fecundity or survival before we can even begin talking about its affect on evolution.
Survival is not a requirement. Random chance is fine.
Improved* survival is not required
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#19Overcrowding. This is a known biological response to overcrowding. I’m sure all the endocrine disrupters in the water supply don’t help.
Why does it also happen in low-density rural areas?
I think you need to look at ‘low density’ and compare it to historical (Paleolithic) population density.
It must be a stress response, so even lower density areas feel some of the pressures of overpopulation (resource scarcity, etc).
And I really think that endocrine disrupting chemicals can’t be ignored (but I’m studying analysis of complex environmental samples for my PhD so I’m biased)
Re: Puberty Starts Earlier Than It Used To. No One Knows Why
#20Earlier quoted context omitted.
> you change what your species used to eat, you evolve into something else That is definitely not how evolution works. First of all, evolution doesn't happen noticeably over one or two generations, which is the timeline we're talking about here. Secondly, show me how something affects fecundity or survival before we can even begin talking about its affect on evolution.
Survival is not a requirement. Random chance is fine.
You seem confused. Random chance for what? Affecting what? If not survival or fecundity, what is it affecting? If an effect is completely random, it cannot drive evolution, because it is not a force for selection of particular traits over other traits. What are you talking about?