時事通信社
不妊治療を行っている長野県の「諏訪マタニティークリニック」（根津八紘院長）は、1996年から2013年に、夫婦79組が、夫の実父（妻の義父）から精子提供を受けて体外受精によって計118人の赤ちゃんが誕生したとする結果をまとめた。
東京都内で開かれる日本受精着床学会で根津院長が7月31日に発表する。MSN産経ニュースなどが報じた。
第三者からの提供精子による非配偶者間人工授精（AID）は匿名が前提。近親者から精子の提供を受ける不妊治療には「家族関係が複雑になる」などの指摘があり、議論を呼びそうだ。
根津院長によると、夫の無精子症などを理由に計146組の夫婦が近親者から精子提供を受けた。内訳は夫の実父が110組、夫の兄弟が28組、その他8組。夫の実父やその妻の理解を得られやすいこともあり、最近は夫の実父からの提供を望む人が多いという。
（MSN産経ニュース「義父の精子で118人誕生 長野の病院で体外受精治療」より 2014/07/28 08:49）
夫の実父から提供を受けた110組のうち86％に当たる95組が妊娠、79組が出産に至った。同様の方法で2回目の出産をしたケースが17組、3～4回目の出産に至ったケースもあったという。
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