Living in a hurry time, nowadays became a life style. In eating, people turn to instant food as a practice choice in preparing meals. In Indonesia, instant noodle is the most popular item in instant food On the other side, eating too much instant food is not a good choice for health, Health
locus of control and health realistic optimism were assume to be the factors that related to instant noodle eating habit. Research have done in 180 subjects in different generations; teenagers (18-20 years old), young adult (21-39 years old) and middle adult (40-60 years old). It found that there was no influence from health locus of control to the instant noodle's eating habit (path coefficient 0.056, p=0.513) and there was no influence from health realistic optimism to the instant noodle's eating
habit (-0.016, p=0.848). Using analysis varian it also found that there was a significant difference in intergenerational instant noodle's eating habit; the young groups tend to eat instant noodle more than the older groups. From this research found that personal factors contributes less than external factors. Instant noodle had the powerful attractiveness to people, especially for young people because of some characteristics such as fast and easy to cook, the full sensatio4 variety of flavors, economist price. For promoting health, this research suggest that internal health locus of control should be the focus of health education because it could lead to the selective eating behavior. Information of healthy food smart and easy cooking skills using fresh food should be given to young people
