Hypertension is an unfinished health problem until now. Hypertension is a disease that causes stroke and decreases the quality of life. One of the preventable causes of hypertension is obese. The purpose of this study is observing the relationship between nutritional status, in this case obesity, and the incidence of hypertension in young adults (18-40 years) in Tomohon City. By utilizing a cross sectional approach, this research was conducted in January-December 2019 on young adults aged 18-40 years who visited 7 community health centers in Tomohon. There were 4,040 samples who were willing to be involved in this study, who had never previously been diagnosed with hypertension by a doctor in any health facility. Based on the Pearson's chi-square test showed a p-value of age and the incidence of hypertension is 0.0001 < 0.05 with estimated risk of 2.206 (CI 95%: 1.917-2.593). P-value of gender and the incidence of hypertension is 0.0001 < 0.05 with estimated risk of 0.715 (CI 95%: 0.622-0.823). P-value of obesity and the incidence of hypertension is 0.0001 < 0.05 with estimated risk of 2.502 (CI 95%: 2.150-2.911). So, it can be concluded that there is a significant relationship between obesity and the incidence of hypertension