Not good for your health; can cause harm.
Eating too much junk food is unhealthful because it can lead to health issues.
吃太多垃圾食品对健康有害,因为它可能导致健康问题。
Not providing enough good stuff for your body; can make you sick.
Fast food is often unhealthful because it has too much fat and sugar.
快餐通常是不健康的,因为它含有过多的脂肪和糖。