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Who is the highest paid sperm donor? 

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Under reciprocity, an even higher investment in sperm is favored.
As such, sperm trading contributes to the stability of apparently ‘altruistic’ sperm donation.
Many countries have introduced limits to the number of offspring each anonymous sperm donor can father but these limits vary considerably.
These results have important implications for contemporary management of patients undergoing therapeutic donor insemination with frozen sperm.
Given this, one might expect similar responses to those aspects of the sperm donor context that are shared with mate choice.
Identifiable sperm donors are driven by altruistic motives, but shortage of sperm donors leads to reproductive travelling.
The studies show that there are men who are prepared to donate sperm without financial payment.
These data demonstrate the variability of donor semen quality provided by commercial sperm banks, both between banks and within a given bank.
The significant decline in released sperm donors coupled with the potential effects of loss of donor anonymity means that new strategies for sperm donor recruitment are urgently required.
Based on interviews with Danish sperm donors and participant observation at Danish sperm banks, I argue that Danish sperm donors make sense of connections to donor-conceived individuals as a particular kind of relatedness that cannot be reduced to either contractual or kinship relations.
Moreover, it is recommended that further research be undertaken into the social and familial consequences of the revocation of sperm donor anonymity and the implications for the setting of sperm donor limits.
As the majority of both the potential recipients and potential donors feels that sperm donors should be paid, perhaps the views of these groups should carry significant weight when the decision whether or not to withdraw payment is taken.

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