There are two kinds of vegetarianism, one is semi-vegetarianism, which can eat eggs and drink milk, and the other is veganism, which only eats vegetables and fruits and does not touch any eggs and meat. Relatively speaking, semi-vegetarians can also get some vitamins from egg milk, but vegans often face vitamin deficiency, which has a great impact on their health. For example, vitamin B 12 only exists in meat, and it is difficult for vegetarians to get it from vegetables. Meat can not only satisfy these vitamins, but also enhance body energy.
Teenagers are in a period of vigorous physical growth and need a lot of nutrition. If you are a vegetarian at this time, your physical development will be seriously affected, or you will be short or stunted. However, with the aging of the body, the intake of vitamins becomes slow and needs more comprehensive nutrition. Otherwise, when calcium, iron and other elements are lost and not replenished, they will suffer from osteoporosis and even endanger their health. So I suggest that you don't blindly follow the trend, try to achieve a balanced nutrition and choose a plan that suits you.
There are also many girls who are vegetarian in order to keep fit, but in the long run, the harm to the body is irreversible. Don't make a big mistake for a moment's beauty, keep a reasonable and standardized diet and exercise properly, and a good figure will naturally come. In fact, our body is a complete ecosystem, and it has its own operating rules. It is not advisable to eat meat or vegetables blindly. Only a balanced vegetarian diet, eating seven or eight points per meal is enough, and you don't have to be reluctant.