BR - I think this is the reason I'm very interested in the low seratonin findings recently. They make the most sense to me of all I've ever been presented with. What I would hate to see is red herring research that tries to inject seratonin or whatever, and that ignores the environmental/cultural reasons our babies have lowered seratonin than in other cultures and environments.
I would really like 'them' to take into consideration the research done into attachment parenting and the research into the hormonal transfers that occur in 'natural' parenting, compared to when babies are 'sleep-trained' etc.