Depression and sadness have been recently reported in a Canadian surrogacy study.
I would be interested in the results of a similar study conducted in the United States in states that legalize commercial surrogacy. The Canadian surrogates likely assisted intended couples for altruistic reasons only as they were not permitted any financial assistance. For this reason, Canadian surrogates tend to select close relatives and friends that might then interact with the child after birth.
Within the United States, surrogates tend to assist intended unrelated families in states that permit commercial surrogacy. The United States model in states permitting commercial surrogacy may lead to a better mental outcome for the surrogate. I would be curious to see if the depression reported in the Canadian study was caused by the process itself or the interactions between the surrogate and child. Interactions between surrogate and child are more likely to occur in altruistic unpaid surrogate cases versus paid surrogacy cases.