Avoid eggs. Drink eight glasses of water a day. Eating carbs will make you fat. Nutritional advice such as this has been touted① for years—but is it accurate？
These are several common nutrition misconceptions：
Eating eggs will raise your cholesterol②. This myth started because egg yolks have the most concentrated amount of cholesterol in any food； however， when eaten in moderation， eggs do not contain enough cholesterol to pose health risks.
Most people avoid eggs and probably if they have any kind of cardiovascular③ risk， their physicians tell them to avoid eggs. But really， there aren’t a whole lot of studies that show that one or two eggs a day really make a difference to cholesterol levels.
Eating carbohydrates makes you fat is another myth. Cutting carbs from the diet may help a person shed pounds due to water loss from a decrease in carbohydrate stores. But eating carbs in moderation does not directly lead to weight gain.
Here’s another myth. Drink eight glasses of water a day. People need to replace water lost through breathing， urinating， sweating each day， but that doesn’t necessarily drink total 64 ounces of water. Drinking too much water can be harmful and leading possibly to an imbalance in the body of sodium④， a condition called hyponatremia.
Many people are still under the impression that they have to drink eight glasses of water a day， so a lot of people carrying bottled water around. But most people don’t realize they get water from other sources in the diet.
It’s also a myth that everyone needs vitamin supplements⑤. Multivitamin is good for most people. But not all the people need vitamin supplements. People who eat a variety of fruits， vegetables， whole grains， along with moderate amounts of a variety of low-fat dairy and protein and the right quantity of calories， probably don’t need a vitamin supplement.
Therefore， we should make clear some opinions on nutrition， in order that we form a good diet habit.
① toutvi. 招徕顾客；兜售；探听赛马情报 vt. 侦查
② cholesteroln. 【生化】胆固醇
③ cardiovascularadj. 【医】(病等)心血管的；侵袭心血管的
④ sodiumn. 【化】钠
⑤ supplementn. 增补，补充；补给品
营养误区
别吃鸡蛋；一天喝八杯水；碳化物会让你变胖；多年来这些营养建议受到大肆宣传，但是它们可靠么？
这是几个普遍传播的营养误区。
吃鸡蛋会增加胆固醇。这个说法源自鸡蛋比其他食物含有更高浓度的胆固醇，但是适量食用不会对健康造成威胁。
很多人不吃鸡蛋，或许如果他们有心血管疾病隐患，他们的医生建议他们远离鸡蛋。但事实上，目前没有足够的研究证明每天1—2个鸡蛋会影响体内胆固醇水平。
吃碳水化合物会引发肥胖也是一个误区。不吃碳水化合物可以减少体内水分含量，以此造成体重减轻。但是适量摄入碳水化合物并不能直接导致体重增加。
还有一个误区：每天喝8杯水。人体的确需要喝水来补充由于呼吸、小便、流汗流失的水分，但真没必要一天喝64盎司。喝太多水是有害的，可能引起体内钠含量失衡，患上低钠血症。
好多人还在受这条谬误的影响，背着水瓶走来走去。但是大多数人都没意识到食物中也含有水分。
还有一个误区就是所有人都需要补充维生素。维生素片对大多数人来说是好的。但并非所有人都需要补充维生素。如果一个人每天食用多种水果、蔬菜、全麦，适量摄入低脂奶制品、蛋白质和卡路里，就不用再吃维生素片了。
因此，我们应该正确的认识关于营养的一些观点，以便养成健康的饮食习惯。