The World Health Organization (WHO) classification system for obesity is based on body mass index (BMI). A BMI of 25.0 to 29.9 kg/ m2 is considered overweight, and ≥30 is considered obese. According to a 2016 WHO report, the worldwide prevalence of obesity nearly tripled between 1975 and 2016. Borje Darpo, Patricia Castellano, Robert Kleiman and Todd Rudo at ERT gives a short summary of the association between obesity, cardiovascular risk and hypertension.