The Comprehensive Health Check-up helps in detecting the early onset of diseases including diabetes and various ailments affecting heart, liver, kidneys and thyroid. The main aim of a check-up is to detect the illness at an early stage, or prevent illness occurring in the first place, which is definitely worth the money spent on it. In adults up to about 40 years, a comprehensive health check-up every two years is appropriate while older adults can have it every year to stay fit.