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It turns out your overprotective mother may have been right: Too much television may, in fact, kill you. A new international study is suggesting that anyone who spends more than four hours a day in front of any "screen-based entertainment" - be it television, videogames or the internet - is increasing their chance of heart attack or stroke by 113%, regardless of any exercise routine to the contrary.
The problem, however, isn't the screen-based entertainment itself, but that it means the participant is spending that time sitting down, according to the report's lead author, Emmanuel Stamatakis from the Department of Epidemiology and Public Health at University College in London:
“Assuming that leisure-time screen time is a representative indicator of overall sitting, our results lend support to the idea that prolonged sitting is linked to an increased risk for cardiovascular disease and premature mortality... I would speculate that the list of sitting-specific health harms will be getting longer and longer in the years to come; this area of research is in its infancy.”
The report puts forward the theory that sitting reduces the activity of an enzyme called lipoprotein lipase by up to 90%, which can lead to an increase in fats like triglycerides in the blood, as well as potentially impair glucose metabolism, suggesting a possible link to type two diabetes. Ideally, according to Stamatakis, we should try and move towards a way of life where standing and moving is more common in our daily routine than sitting. Somewhere, Kinect and Wii makers are planning brand new "play our games or die" ad campaigns as you read these very words.
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原來你那位喋喋不休過分關(guān)顧你的媽媽可能真的說對(duì)了：看太多電視可能會(huì)要你的命！一項(xiàng)新的國際研究顯示，每天沉迷于“屏幕上的娛樂”——如電視、電子游戲、上網(wǎng)——超過4小時(shí)的人，爆發(fā)心臟病或中風(fēng)的幾率會(huì)增加113%，即使經(jīng)常鍛煉身體也于事無補(bǔ)。
據(jù)研究報(bào)告的第一作者、倫敦大學(xué)學(xué)院流行病學(xué)和公共衛(wèi)生系的 Emmanuel Stamatakis 指出，問題不在哪一種屏幕上的娛樂，而是在于長時(shí)間坐著不動(dòng)。他說：
“假定一個(gè)人休閑時(shí)花在屏幕前的時(shí)間代表他總共坐著的時(shí)間，那么我們的研究結(jié)果支持這樣的結(jié)論：坐著的時(shí)間長，會(huì)提高得心血管疾病和過早死亡的風(fēng)險(xiǎn)。...... 我相信，將來我們會(huì)陸續(xù)發(fā)現(xiàn)越來越多因?yàn)樽臅r(shí)間太長而對(duì)身體健康造成的傷害。這方面的研究才剛剛起步。”
該研究報(bào)告提出一種理論，就是坐著的時(shí)候，人體內(nèi)的“脂蛋白脂酶”活性會(huì)下降，最嚴(yán)重的可能下降90%之多，以致血液中的脂肪（如三酸甘油酯）增多，同時(shí)可能影響到葡萄糖代謝，因而可能與二型糖尿病的發(fā)病有關(guān)。Stamatakis 認(rèn)為，最理想的應(yīng)對(duì)是試圖改變我們的生活方式，在日常生活中多些時(shí)間站著和走動(dòng)，減少坐著不動(dòng)的時(shí)間。當(dāng)你還在讀這篇文章的時(shí)候，也許 Kinect 和 Wii 的制造商已經(jīng)在策劃推出以“不玩我們的游戲你會(huì)早死”為主題的新廣告攻勢呢！
