Trevor has 1 full sister , 5 half brothers and 3 half sisters this story is going to get a bit complicated so you need to concentrate. 3 of the half brothers have died of pca. Trevor making 4 out of 6 male children to have pca. (that we know of)
Brother no 1 and the eldest of the children was born and raised in Jamaica his mother was Jamaican.
Trevor's Dad then emigrated to England and married Trevor's Mum , Trevor's Mum was Jamaican she arrived in England the year before his Dad , Trevor and his sister were born in Nottingham , they moved to London when Trevor was around 4, soon after this his Dad divorced his Mum and left.
Brother no 2 was born in England but the new family emigrated to America when he was around 2 years old , this Mum was white (so the children where mixed race.
Brother no 3 , Trevor's Dad never hung about very long so he had divorced wife no 2 and married wife no 3 she was from Canada and was of Chinese descent , emigrated to Sweden . This is where brother no 3 was born.
So all from different Country's with different mothers, I can't see environment being a link to any of them . Trevor's Dad didn't really hang around long enough to have an influence on diet.
The eldest brother was the one that lived the longest , mid seventies the others are younger than Trevor so would have been in there late 50s to early 60s.
Trevor's Dad some how ended up in a nursing home in Kent , he died of a stroke alone with no family around him he was 62.
I will leave you all to draw your own conclusions to this story, but certainly food for thought.
BFN
Julie X