【“昼間の短さ”が影響?】「冬は眠い」 睡眠の質を上げるために出来ること【Nスタ解説】|TBS NEWS DIG

TBS NEWS DIG Powered by JNN December 3, 2025
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TBS/JNNのニュースを配信する「TBS NEWS DIG Powered by JNN」公式YouTubeチャンネルです。緊急ニュースが発生した場合は「ライブ配信」で対応。テレビでは放送していないYouTubeオリジナルコンテンツも、盛りだくさんでお届けします。 The news script automatically converted to audio will be our original news and/or officially licensed news written by professional journalists. The final videos will be appropriately reviewed by professional human news editors before being uploaded.

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寒くて眠れない…と思っていらっしゃる方、実はその原因、寒さだけじゃないかもしれません。 ■冬の睡眠の質低下は“昼間の短さ”も影響している!? 山形純菜キャスター: 医師も「夏よりも冬の方が睡眠の質が悪くなる」と話していましたが、そこには意外な理由がありました。 まず、冬に睡眠の質が悪くなる理由は、やはり「寒さ」です。 3日~4日にかけての東京の気温は、4日朝にかけてぐっと冷え込んでいき、4日の東京の最低気温は4℃の予想となっています。 内科・疲労外来の工藤孝文医師によると、「冬のジグザグ天気は自律神経に負担がかかる。寒いと感じるということは、体を温めようと交感神経が優位に働き、結果として睡眠の質が低下する」ということです。 「寒さ」で睡眠の質が悪くなるというのは何となくわかりますが、これだけではなく、冬特有の理由があるそうです。それが、“昼間の短さ”が影響しているということなんです。 朝、太陽の光を浴びることによって、いわゆる“幸せホルモン”(セロトニン)が生成されます。 朝日と“幸せホルモン”が睡眠にどのように関係しているのかというと、“幸せホルモン”は、時間をかけて、夜に“睡眠ホルモン”(メラトニン)に変換されます。“睡眠ホルモン”(メラトニン)によって、眠りの質がアップします。 そのため、朝に太陽の光を浴びることは非常に重要なことなんです。 ところが、冬は昼間が短く、日の出が遅いので、“睡眠ホルモン”の分泌が減ってしまったり、遅くなってしまって、睡眠の質が悪くなるということなんです。 ■体を温めて、日光を浴びて… 睡眠の質向上のために出来ること 山形キャスター: では、冬の睡眠の質を上げるにはどうすればいいのでしょうか。 内科・疲労外来の工藤孝文医師によると、暖かい場所から外に出るときや外出前に、マフラー・手袋・靴下などを「直前」ではなく「10分前」から身につけ、体の内側を温めて外に出ると、寒暖差を感じにくくなるそうです。 首には太い血管がありますので、そこを温めていくと血流が良くなるということです。 それから、日光浴もいいそうですが、晴れてる日じゃないとダメなのかというとそうでもなく、曇りでも大丈夫だということです。 なるべく早く起きて、外に出てみるのも大切かもしれません。 ▼TBS NEWS DIG 公式サイト https://newsdig.tbs.co.jp/ ▼チャンネル登録をお願いします! http://www.youtube.com/channel/UC6AG81pAkf6Lbi_1VC5NmPA?sub_confirmation=1 ▼情報提供はこちらから「TBSインサイダーズ」 https://www.tbs.co.jp/news_sp/tbs-insiders.html ▼映像提供はこちらから「TBSスクープ投稿」 https://www.tbs.co.jp/news_sp/toukou.html #ニュース #news #TBS #newsdig

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