New study.
"Our results shed light SLE being correlated with increased risk for 16 involved cancers and decreased risk for prostate cancer and cutaneous melanoma."
More: "non-Hodgkin’s lymphoma, Hodgkin’s lymphoma, leukemia, multiple myeloma, cervix, vagina/vulva, renal, bladder, esophagus, gastric, hepatobiliary, lung, oropharynx, larynx, non-melanoma skin, and thyroid cancers"
... but less PCa!
Go figure.
...
I remember an old article on the flu shot that said that men with normal-high testosterone seem not to benefit. The reason being that testosterone [T] dampens the immune response, so less antibodies are produced.
The piece hypothesized that ancient man might have benefited, in that with some common injuries you don't want a vigorous immune response.
The price women pay for having a stronger immune system is a greater chance of autoimmune diseases - such as Lupus.
So men with normal T have a very low risk of lupus. But men with low T have increased risk of aggressive PCa. So why would SLE lower the PCa risk?
It might be a function of hw low the T is. "... testosterone inhibits the survival of B-cells, which are responsible for producing the autoantibodies that attack the body’s own tissues in autoimmune diseases." The quote is from an article about a 2018 study: "Testosterone is an endogenous regulator of BAFF and splenic B cell number" [2]:
"Testosterone deficiency in men is associated with increased risk for autoimmunity and increased B cell numbers through unknown mechanisms. Here we show that testosterone regulates the cytokine BAFF, an essential survival factor for B cells. Male mice lacking the androgen receptor have increased splenic B cell numbers, serum BAFF levels and splenic Baff mRNA. Testosterone deficiency by castration causes expansion of BAFF-producing fibroblastic reticular cells (FRCs) in spleen, which may be coupled to lower splenic noradrenaline levels in castrated males, as an α-adrenergic agonist decreases splenic FRC number in vitro. Antibody-mediated blockade of the BAFF receptor or treatment with the neurotoxin 6-hydroxydopamine revert the increased splenic B cell numbers induced by castration. Among healthy men, serum BAFF levels are higher in men with low testosterone. Our study uncovers a previously unrecognized regulation of BAFF by testosterone and raises important questions about BAFF in testosterone-mediated protection against autoimmunity."
-Patrick
Neuroendocrine PCA mutation
PCa survival is best in the US
Coffee and PCa question
If casodex switches to feeding PCA
