In China, takeout food has become wildly 1. among teenagers and young adults. The key reason is convenience apps allow users to order meals instantly, saving time for those busy with school or work. However, this trend has downsides. First, 2., such as plastic boxes and bags, create lots of trash and waste natural resources. Second, many takeout dishes contain too much oil, salt, or sugar, which doctors warn could cause 3. like weight problems. While takeout is useful, experts suggest young people should find the balance. Most importantly, 4..

1. popular
2. packaging materials
3. health problems
4. use it in moderation