concurring in part and dissenting in part.
With the exception of Parts IY-D and IY-E, I join the Court’s opinion.
In Roe v. Wade, 410 U. S. 113, the Court held that a woman’s right to decide whether to abort a pregnancy is entitled to constitutional protection. That decision, which is now part of our law, answers the question discussed in Part IV-E of the Court’s opinion, but merely poses the question decided in Part IV-D.
If two abortion procedures had been equally accessible to Missouri women, in my judgment the United States Constitution would not prevent the state legis*102lature from outlawing the one it found to be less safe even though its conclusion might not reflect a unanimous consensus of informed medical opinion. However, the record indicates that when the Missouri statute was enacted, a prohibition of the saline amniocentesis procedure was almost tantamount to a prohibition of any abortion in the State after the first 12 weeks of pregnancy. Such a prohibition is inconsistent with the essential holding of Roe v. Wade and therefore cannot stand.
In my opinion, however, the parental-consent requirement is consistent with the holding in Roe. The State's interest in the welfare of its young citizens justifies a variety of protective measures. Because he may not foresee the consequences of his decision, a minor may not make an enforceable bargain. He may not lawfully work or travel where he pleases, or even attend exhibitions of constitutionally protected adult motion pictures. Persons below a certain age may not marry without parental consent. Indeed, such consent is essential even when the young woman is already pregnant. The State's interest in protecting a young person from harm justifies the imposition of restraints on his or her freedom even though comparable restraints on adults would be constitutionally impermissible. Therefore, the holding in Roe v. Wade that the abortion decision is entitled to constitutional protection merely emphasizes the importance of the decision; it does not lead to the conclusion that the state legislature has no power to enact legislation for the purpose of protecting a young pregnant woman from the consequences of an incorrect decision.
The abortion decision is, of course, more important than the decision to attend or to avoid an adult motion picture, or the decision to work long hours in a *103factory. It is not necessarily any more important than the decision to run away from home or the decision to marry. But even if it is the most important kind of a decision a young person may ever make, that assumption merely enhances the quality of the State's interest in maximizing the probability that the decision be made correctly and with full understanding of the consequences of either alternative.
The Court recognizes that the State may insist that the decision not be made without the benefit of medical advice. But since the most significant consequences of the decision are not medical in character, it would seem to me that the State may, with equal legitimacy, insist that the decision be made only after other appropriate counsel has been had as well. Whatever choice a pregnant young woman makes — to marry, to abort, to bear her child out of wedlock — the consequences of her decision may have a profound impact on her entire future life. A legislative determination that such a choice will be made more wisely in most cases if the advice and moral support of a parent play a part in the decisionmaking process is surely not irrational. Moreover, it is perfectly clear that the parental-consent requirement will necessarily involve a parent in the decisional process.
If there is no parental-consent requirement, many minors will submit to the abortion procedure without ever informing their parents. An assumption that the parental reaction will be hostile, disparaging, or violent no doubt persuades many children simply to bypass parental counsel which would in fact be loving, supportive, and, indeed, for some indispensable. It is unrealistic, in my judgment, to assume that every parent-child relationship is either (a) so perfect that communication and accord will take place routinely or *104(b) so imperfect that the absence of communication reflects the child’s correct prediction that the parent will exercise his or her veto arbitrarily to further a selfish interest rather than the child’s interest. A state legislature may conclude that most parents will be primarily interested in the welfare of their children, and further, that the imposition of a parental-consent requirement is an appropriate method of giving the parents an opportunity to foster that welfare by helping a pregnant distressed child to make and to implement a correct decision.
The State’s interest is not dependent on an estimate of the impact the parental-consent requirement may have on the total number of abortions that may take place. I assume that parents will sometimes prevent abortions which might better be performed; other parents may advise abortions that should not be performed. Similarly, even doctors are not omniscient; specialists in performing abortions may incorrectly conclude that the immediate advantages of the procedure outweigh the disadvantages which a parent could evaluate in better perspective. In each individual case factors much more profound than a mere medical judgment may weigh heavily in the scales. The overriding consideration is that the right to make the choice be exercised as wisely as possible.
The Court assumes that parental consent is an appropriate requirement if the minor is not capable of understanding the procedure and of appreciating its consequences and those of available alternatives. This assumption is, of course, correct and consistent with the predicate which underlies all state legislation seeking to protect minors from the consequences of decisions they are not yet prepared to make. In all such situations chronological age has been the basis for imposition of a restraint on the minor’s freedom of choice even though *105it is perfectly obvious that such a yardstick is imprecise and perhaps even unjust in particular cases. The Court seems to assume that the capacity to conceive a child and the judgment of the physician are the only constitutionally permissible yardsticks for determining whether a young woman can independently make the abortion decision. I doubt the accuracy of the Court’s empirical judgment. Even if it were correct, however, as a matter of constitutional law I think a State has power to conclude otherwise and to select a chronological age as its standard.
In short, the State’s interest in the welfare of its young citizens is sufficient, in my judgment, to support the parental-consent requirement.