我们不需要吃肉也能拥有健康的饮食，所以每个人都应该成为素食主义者。你在何种程度上同意或不同意？
思路解析
这是一道观点类作文，健康类话题中关于素食的讨论。审题时要注意题目中的 everybody ，因此我们建议持反对观点。然后月半鸭来和大家一起梳理下素食的好处，以及反对的原因。
首先来看好处。水果蔬菜包含了的丰富的维生素、植物蛋白等营养物质，这些对健康是有益的。而不吃肉则避免了过多脂肪和热量摄入的可能性，可以有效避免肥胖、降低患心脏病的概率。同时在这基础上，吃肉意味着要杀害动物，在有些人看来，这是一种残忍的行为。
但是，反对的点在于三方面。
一是人本身就是杂食动物，吃肉是天性之一，每个人都有自己选择的权力，每个人的体质和饮食习惯不同，吃肉对有的人来说不一定是单纯为了健康，也可能是人心情愉悦，因此不应该强行干涉个人的选择。
二是单吃素食未必就是健康的，健康的饮食需各类营养的均衡摄入。素食除豆类食品外，其他食材中蛋白质含量低，无法满足人体日常所需的各种动能。长期吃素可能会由于蛋白质和脂肪摄入不足，不仅造成营养成分失衡，而且会急剧降低人体抵抗力，容易患上传染病，并造成骨质疏松容易骨折等。比如对于小孩子来说，想要健康的身体发育，肉类所包含的动物蛋白质、微量元素等都是非常必要的，动物蛋白相较于植物蛋白的消化率和利用率也更高，如果不吃肉可能会影响其健康发育。
三是纯吃素食成本未必低，对于条件落后的地区和人们并不现实，相比较而言饲养肉牛之类的手段是效率更高的提供食物的方式，
范文示例
It is sometimes argued that a healthy diet does not necessarily consist of meat, so we should all become vegetarians. Although a vegetarian diet can certainly benefit the human body in a range of different ways, I disagree with the view that it is the appropriate choice of diet for everyone.
On the one hand, it is undeniable that there are documented health and social benefits to a vegan diet. Since a vegan diet is plant-based, it would be easier for vegetarians to load up on healthy whole grains, fruits, and vegetables that many people on regular diets lack. Furthermore, there is evidence supporting that a vegetarian diet also lowers the risk of heart disease. More importantly, another reason why a lot of vegetarians argue that we should all adopt a meat-free diet is that killing animals for food is unethical. Especially because raising animals in confinement for slaughter is cruel, and many animals are not slaughtered humanely.
In spite of the above arguments, I would argue that those who are not willing to become vegetarian should not be forced to do so. Firstly, eating meat is nothing but natural as humans are omnivores and have evolved to consume even more meat. Vegetarians mistakenly elevate the value of animal life over plant life. Research shows that plants also respond electrochemically to threats, so it is safe to say that eating meat is no more cruel or unethical than eating vegetables. Secondly, there is evidence showing that raising beef is often the most efficient way to produce food for humans, which means that eating meat might be the optimal solution to famine release in certain developing countries eroded by poverty.
In conclusion, it is my belief that people have the right to choose for themselves which diet to adopt.
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