You know the type
“I drank through all my 72784 pregnancies and all my children are fine.”
“I never vaccinated my kids and they are healthy”
“My Nan smoked 749298492838 a day and had the lungs of an 18 year old.”
Personal anecdotes do not outweigh often decades and decades of research. There are always outliers.
And if people want to engage in risky behaviour that could potentially harm their unborn child or increases their chances of developing diseases, crack on. But don’t try and justify it by arguing with the science