Stay warm, or you'll catch a cold. Brush your teeth often to prevent cavities. We've heard such advice and accepted them as truths. However, many popular health-related beliefs are actually based on misconceptions. Here are some of them.
Winter Colds
Can cold weather really make you catch a cold? Science tells us the answer is "no." Colds are caused by viruses, not low temperatures. People get sick more often in the winter because they stay indoors, where they're more likely to spread and pick up germs.
Fresh vs. Frozen Foods
For years, scientists have advanced the health benefits of eating fresh fruits and vegetables. This has led many to consider frozen foods to be less nutritious. However, the freezing process actually locks in the foods'nutrients. Fresh foods, if left uneaten for too long, can lose their nutrients through heat and air exposure.
Natural vs. Artificial Products
Nature has created countless harmful substances such as toxins and bacteria, but this hasn't stopped people from assuming that natural is always safer than artificial. Instead of focusing on whether a product is natural or artificial, consider its safety record, and find out whether it has been clinically tested.
要保暖，不然就會感冒。經常刷牙以預防蛀牙。我們都聽過這類建議，並把它們當作事實接受。然而，許多廣為流傳的健康相關看法事實上都由誤解而來。這裡是其中一些。
冬天感冒
寒冷的天氣真的會讓你感冒？科學告訴我們答案是「不會的」。感冒是由病毒引起，不是低溫。人在冬天較常生病是因為他們待在室內，而在室內比較可能散播和感染病菌。
新鮮食品與冷凍食品
許多年來，科學家提倡食用新鮮蔬果對健康的益處。這導致許多人認為冷凍食品較不營養。然而，冷凍過程事實上能鎖住食物的營養成分。新鮮的食物如果放太久沒吃，會因為高溫與暴露在空氣中而流失營養成分。
天然製品與人工製品
自然界產生了無數有害的物質，比如毒素和細菌，但這並未阻止人們以為天然的永遠比人工的安全。不要著重於產品是天然的還是人工的，而要考慮它的安全紀錄，並查明它是否經過臨床檢測。
文章出處：Live互動英語雜誌
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