Humans say it is a human right not to be excluded from medical procedures based on sex. Not allowing women access to medical procedures is discrimination.
Science says when a fetus is viable based on the study of human developmental biology.
There are many abortions performed when the fetus would have been able to survive if it had been delivered rather than aborted. These abortions are the most clearly wrong. With advancements in medical technology, viability outside the womb has become increasingly earlier in pregnancy over time.
Restrictions on abortion are not prohibiting women from receiving abortions based on their sex.