I’ve talked about the effect of sunlight on the pineal gland changing testosterone levels of immigrants from equatorial regions. Equatorial people with established, normal, daily 30% fluctuations in testosterone move to northern climates and experience fluctuations that last for months, thus compelling radical changes in a mother’s uterine testosterone levels. Unusually high or low mother’s uterine testosterone levels can cause unusually high or low testosterone levels in her children, translating into exaggerated maturational delay and acceleration (depending on the season of conception) that can contribute to autism.

In previous pieces, I’ve noted these effects on Jewish and American Black populations, with a skewing of populations toward the extremes of maturational delay and acceleration evidenced by a number of diseases and disorders characterized by these hormonal extremes. I would predict that both these populations would evidence higher percentages of autism and left-handedness, perhaps higher in places like Milwaukee and Minnesota than Houston and Miami. In just the way the Somalis in Minneapolis and St. Paul are exhibiting higher rates of autism, I would suggest that this Somali population would exhibit higher rates of left-handedness.

Another population influenced by these processes are the Latino immigrants from South and Central America. Studies could be conducted tracing the effects of sunlight on the pineal by noting the country of origins of Latino individuals, their proximity to the equator and how far north those individuals have traveled.

There are several issues.

First, how often do these people return to their country of origin? The more frequent their returns and the longer their stays, the less influenced they will be by the testosterone pineal effect.

Second, conceiving and bearing their children in Seattle vs. San Diego will likely influence the mother’s testosterone levels in different ways. I would predict that Seattle Latinos have higher incidence of left-handedness, autism and other symptoms related to these issues, such as allergies.

Third, there may be father effects. Recent age-of-father studies suggest older males are more likely to sire autistic children. This may be related to a father’s testosterone levels dropping with age. If the father’s testosterone levels at the time of sperm creation influence the testosterone levels and maturation rates of his children, then where the children are conceived (how far north or south) may influence the children’s maturational disposition.

Fourth, not all indigenous South and Central American populations share the same social structure tendencies. Egalitarian communities such as Mayan peoples with matrifocal tendencies exhibit male maturational delay and female maturational acceleration unlike some South American tribes with the opposite disposition. Individuals from matrifocal communities are more vulnerable to testosterone pineal effects than their patrifocal counterparts.

Fifth, if an indigenous American or Latino woman or man mates with a Black, Asian or White, the progeny may reveal features or characteristics of the last common ancestor, a not uncommon effect. This, in combination with testosterone pineal influences, may in combination further thrust children toward male maturational delay, female maturational acceleration and autism.

Sixth, it is possible that there will be multigenerational echo effects. Second-generation Latinos marrying and then conceiving children at the same time of the year as they themselves were conceived may further boost the influence of seasonal testosterone-pineal effects. Whereas the first generation may not have exhibited effects of extreme maturational delay or acceleration, a second or later generation may show those influences, particularly if other environmental testosterone-influencing variables are in play, for example, if the mother smokes.

Seventh, there are many environmental effects influencing testosterone levels in males and females. A Latino mom eating an American high-fat diet, unfamiliar to her before her migration, can dramatically increase testosterone and estrogen levels, influencing her children’s uterine environment.

In the way that we observe Blacks and Jews impacted by changes in geography, we are likely to see the same variables influencing Latino populations. The fact that there is often frequent travel back to the country of origin will mitigate the testosterone-pineal effect. Other influences noted above may exaggerate them. Just as there have been dramatic increases in allergies for Blacks and Jews, watch for such symptoms appearing in Latinos. Other maladies influenced by testosterone levels are also in play, such as prostate cancer. Autism is not the only condition influenced by testosterone levels.

These are the effects that we can observe by tracing the paths of immigrants in the Americas. What of South-to-North immigrant routines in other parts of the world? We’d hypothesize immigrants from India to the U. K. To manifest these effects, there are populations of southern peoples in Scandinavia. What have those communities been experiencing?


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