I am not a scientist or a biologist. But let's assume for the sake of argument there is such a thing as xx and xy chromosomes. /s And also, that "women" have more fat than men. /s
So many of the SAD victims seem to be extremely fit. Young men are most susceptible to cardiac side effects from the jab. The female sudden deaths I have seen anyway are often pre-puberty. I wonder if body fat absorbs spike protein before it can overwhelm the vital organs.
I think it may be to do with ACE2 receptor levels and distribution. These change in response to conditions and are highest in young men. It regulates blood pressure and heart rate and it is also found in the lining of blood vessels and lungs.
The spike protein is known to bind strongly with the ACE2 receptor.