When it comes to breast cancer, studies have been pretty consistent: there is no safe amount of alcohol.

就乳腺癌来说，研究结果是非常的一致：饮多少量的酒精都是不安全的。

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Individuals who average six-and-a-half hours of sleep can be reassured that this is a safe amount of sleep.

那些每晚平均睡6个半小时的人可以放心，这是一个安全的睡眠量。

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The average person ingests a very safe amount, 2 to 3 milligrams, daily through fluoridated drinking water, toothpaste and food.

人每天通过水、牙膏、食物摄入氟化物的安全剂量是2 - 3毫克。

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And the concept of a daily safe amount may even encourage the idea that we should drink alcohol every day.

BBC: Alcohol limits advice 'confusing'

In this week's Scrubbing Up, she says that to have a daily "safe" amount is misleading and that some people - including pregnant women and drivers - should be told "no alcohol is best".

BBC: Alcohol limits advice 'confusing'

He goes on to say that you can feel safe because a large amount of Americans invest in this product.

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