50 years ago, freezing sperm faced scientific skepticism

The uncertainty of banking spermScience News, February 26, 1972

Many men contemplating vasectomies have been depositing a quantity of their semen with sperm banks where, for a fee, it is frozen and stored.… There is wide disagreement on the length of time that sperm may be frozen and then thawed and used successfully to impregnate a woman, with estimates ranging from only 16 months to as much as 10 years.


The ability to freeze sperm has helped make parenthood possible for millions of people, including infertile or same-sex couples and people who have undergone cancer treatment (SN: 6/19/21, p. 16). Sperm-freezing methods have improved since the

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