The right of privacy has evolved to protect the freedom of individuals to choose whether or not to perform certain acts or subject themselves to certain experiences. This personal autonomy has grown into a 'liberty' protected by the Due Process Clause of the 14th Amendment. However, this liberty is narrowly defined, and generally only protects privacy of family, marriage, motherhood, procreation, and child rearing. Further extensions of this right of privacy have been attempted under the 1st, 4th, and 5th Amendments to the U.S. Constitution, however a general right to personal autonomy has yet to take hold beyond limited circumstances.