Fan B, et al. - Researchers analyzed longitudinal body mass index (BMI) trajectories during young adulthood (20–40 years of age) in a cohort of 3,271 participants. They assessed hypertension risk in relation to level-independent BMI trajectories. Participants had information on incident hypertension and had undergone repeat measurements of BMI and blood pressure (BP) 4-11 times from 2004 to 2015. By latent class growth mixture model, low-stable (n=1,497), medium-increasing (n=1,421), high-increasing (n=291), and sharp-increasing (n=62) were the four distinct trajectory groups that were revealed. According to the findings, hypertension risk was significantly influenced by the level-independent BMI trajectories during young adulthood. The important period for incident hypertension was suggested as the age between 20 and 30 years.