There is no reason why a man should not shave when his wife is pregnant.
The provided reference specifically addresses the safety of shaving for pregnant women, not for their partners. It states:
One of the concerns that may pop up for pregnant women is whether shaving can pose any risks to the developing baby. The good news is that shaving during pregnancy is generally safe when done correctly.
This indicates that the act of shaving itself is not a risk factor during pregnancy. Therefore, a man shaving while his wife is pregnant does not introduce any known health risks to either the pregnant woman or their developing baby.
In summary:
- No Evidence of Risk: There's no scientific evidence or medical guidance suggesting that a man shaving poses any threat to a pregnant woman or her baby.
- Shaving Safety (For Pregnant Women): The reference highlights that even pregnant women can safely shave, further solidifying that the act of shaving is generally safe.
Therefore, this question is based on a misconception or unfounded belief. It is perfectly acceptable for a man to shave when his wife is pregnant.