And even the studies that have been performed, it was done in households in which the pregnant woman was constantly exposed to secondhand smoke. Occasional second hand smoke has no known side effects.
Where did I ever say it was due to secondhand smoke? I saw studies that looked at the father’s health at time of conception affecting miscarriage and birth defect rates. If the father is an alcoholic that causes the miscarriage rates to go up as well. I don’t think anyone believes in second hand alcohol effects.
Anything affecting a father’s health can impact his children’s future health. Not going into too much details as to the hows and whys but it is now believed that future fathers should be taking care of themselves in the same way future mothers do now. This includes no smoking, minimal drinking if at all, and healthy eating habits as well.