” It’s true, as Steve Coles often notes, that nobody is “born old”–but perhaps we’re all born rather “older” than we would be, had we been incubated in a richly provisioned artificial uterus?”
I believe in progeria the person is born old or at least had accelerated aging, I wonder if any research has been done with plasma with these children.
On Mar 21, 2014, at 9:41 AM, Damien Broderick wrote:
On 3/21/2014 4:17 AM, M2darwin@aol.com wrote:
There is an exploding literature on this issue as it concernsfetal-maternal chimerism, with emerging evidence suggesting that anumber of diseases in both mothers and their (male) offspring may be dueto chimeric stem cells. […]
It has long been known in organ transplantation the occurrenceof graft-host chimerismn is predictive of long term survival of thegraft (and thus of the host, as well), Patients who survive decadesafter transplantation reportedly experience extensive stem cellcolonization from the graft.
Yes, but what I was asking is whether heterochronic blood sharing is bad for the younger *partner* (not *donor*, as in dead youth=>Richard DeVoss, where it’s pretty obvious that the donor came off worse than the recipient). If a society permitted a kind of conscription in which young people had to remain “grafted” to older people for a week per month or year, would the kids “grow old before their time,” damaged by the circulating garbage in the blood and organs of the much older partner?I understand that in the US the healthy poor may sell their blood on a regular basis (while this is illegal and regarded with horror in Australia, say), so we could end up with the wealthy aged literally vampirizing on the jobless young.The point about fetal-maternal chimerism does raise the intriguing possibility that we all start off seriously compromised by having “caught old age” from our mothers. It’s true, as Steve Coles often notes, that nobody is “born old”–but perhaps we’re all born rather “older” than we would be, had we been incubated in a richly provisioned artificial uterus?Damien Broderick