疫学研究 (observational study)

[中国の重慶市でのMARHCSコホート研究の結果：精液パラメータへの携帯電話使用の影響] epidem.

Effects of cell phone use on semen parameters: results from the MARHCS cohort study in Chongqing, China

著者: Zhang G, Yan H, Chen Q, Liu K, Ling X, Sun L, Zhou N, Wang Z, Zou P, Wang X, Tan L, Cui Z, Zhou Z, Liu J, Ao L, Cao J

掲載誌: Environ Int 2016; 91: 116-121

RISフォーマットで参考文献をダウンロード

この研究は、一般男性の精液パラメータに対する携帯電話使用の影響を調べる目的で、重慶男子大学生生殖健康（MARHCS）コホート調査（2013年開始（n=794）、その追跡調査：2014年（n=666）、2015年（n=568））で、携帯電話使用と精子パラメータとの関連を評価した。その結果、1変量の単回帰分析では、1日の通話時間と精子濃度、総精子数などいくつかのパラメータの低下との間に有意な関連が見られたが、各調査年で関連する精液パラメータは一部異なった；携帯電話によるインターネット使用時間と一部の精子パラメータ低下の間にも関連が見られた；多変量回帰分析での交絡因子調整後においても、同様の関連性が有意ではないが見られた、と報告している。

The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary? Then please contact us →

研究の目的(著者による)

A cohort study was conducted in China to investigate the effects of mobile phone use on sperm quality among students.

詳細情報

Semen quality was assessed for each participant in 2013, 2014 and 2015 using four parameters (volume, concentration, total count, and motility) according to the criteria of the World Health Organization.

影響評価項目／リスク推定のタイプ

生殖への影響および妊娠アウトカム: semen parameters

リスク推定のタイプ:

有病率

ばく露

- 移動体通信システム
- 携帯電話
- 個人用

ばく露評価

質問票: number of mobile phones owned, 3rd-generation (3G) function, duration of mobile phone use, the position in which they carry the mobile phone, daily duration that the mobile phone is turned on (within the scope of 50 cm near the body), daily duration of internet use (in 2013) or monthly data traffic via cellular networks (in 2014 und 2015), and daily time spent talking on the mobile phone in the last 3 months

調査対象集団

グループ:
- 男性
年齢: 20–22年
特性: college students
観察期間: 2013, follow-up 2014 and 2015
調査地域: China (Chongqing)
データ源: Male Reproductive Health in Chongqing College Students (MARHCS) study
排除クライテリア: < 2 or > 7 days of abstinence, a history of inflammation of the urogenital system, epididymitis, testicular injury, incomplete orchiocatabasis or varicocele treatment

調査規模

タイプ	値
合計	872
適格者	794

その他:

follow-up: 666 students in 2014 and 568 students in 2015

統計学的分析方法:

線形回帰

(調整:

年齢
duration of abstinence, BMI, smoking, alcohol, cola, coffee and fried food consumption

)

結論(著者による)

For mobile phone use, the median daily duration of having the phone on was 12.5 h for all three years. The median daily talking durations were 30, 18, and 6 min for 2013, 2014, and 2015, respectively. The daily duration of internet use was 1.5 h in 2013. The monthly data traffic on the cellular network was 0.2 GB and 0.5 GB for 2014 and 2015, respectively.
After adjusting for potential confounders, significant associations between internet use and decreased sperm concentration and total sperm counts in 2013 and decreased semen volume in 2015 were observed. For all three years together, daily duration of talking on the mobile phone was found to be significantly associated with decreased sperm count. No significant association between mobile phone and internet use and sperm motility were observed.
The authors concluded that certain aspects of mobile phone use may negatively affect sperm quality in men by decreasing the semen volume, sperm concentration or sperm count.

研究助成

China's International Science and Technology (S&T) Cooperation Project
National Natural Science Foundation (NSFC), China

この論文に対するコメント

Mortazavi SAR et al. (2017): [「精液パラメータへの携帯電話使用の影響：中国の重慶市でのMARHCSコホート研究の結果」に対するコメント]