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Catholics, Protestants and Jews are in agreement over the objectives of family planning, but disagree over the methods to be used.

The Roman Catholic Church sanctions only abstention or the rhythm method, also known as the use of the infertile or safe period.

The Church considers this to be the method provided by nature and its divine Author: It involves no frustration of nature's laws, but simply an intelligent and disciplined use of them.

With the exception of the Roman Catholic and the Orthodox Catholic Churches, most churches make no moral distinction between rhythm and mechanical or chemical contraceptives, allowing the couple free choice.