Is there anything my husband can be doing to improve our chances of having a pink?

[atomic sagebrush]

the info only conflicts because there is no way to know some of this stuff - we just don't have the data to know for sure. So you ahve to go with what your gut and heart tell you to do and what makes the most sense to you.

[rainbowflower]

I think recommendations have changed a bit over time as we get new studies/research/information.. so that's probably why some things seem to clash. Some researchers come up with theories as to why their results seem to show one thing (such as Shettles assuming it was because X and Y sperm are different speeds etc) and then future studies find out more information and can support or disprove that, and provide their own theories too. That's why we now discredit timing, and all the diets do seem to sway just for slightly different reasons so although those may seem to conflict too they are all actually doing the same sort of thing (reducing food intake and variety) just the specifics that vary. The more you read, the more it starts to fall into place. HTH

[atomic sagebrush]

also, if you look at a study WITHOUT assuming certain "truisms", as in we know that X and Y sperm are equally hearty, swim the same speed, and live the same amount of time, then the conclusions that you draw are not going to be the same as someone who just accepts that as gospel truth.