Why do we need a health checkup? Why do we need a health checkup? Correct diagnosis makes it easier for us to get the right treatment. In our daily lives, we are hardly able to take care of ourselves, and there are some diseases whose side effects are difficult to show quickly in our body. For example, we generally do not feel any discomfort due to increase in sugar, whereas if the sugar level goes down, we immediately feel its discomfort like dizziness or darkness in front of the eyes or feeling very tired. But if the same sugar level increases too much in our body, then its adverse effects are not visible on the body quickly, therefore it becomes necessary for us to ensure this. There are many such changes which we generally do not understand which can be detected immediately by just a blood test, hence it is necessary to have a general check-up of complete health once a year.