More than 44,000 children aged 0-5 years old in Metro Manila are underweight for their age based on the results of the Operation Timbang (OPT) Plus conducted in the 16 cities and one municipality in Metro Manila in 2013.  OPT Plus is a massive weighing and length/height-taking activity among children 0-71 months old held at the start of the year to help communities locate and identify children who are underweight, thin, stunted or overweight.  Results of OPT Plus are used by local government units (LGUs) in planning nutrition interventions to address the malnutrition problem in their communities.

Of the 1.68 million children weighed in 2013, 3 out of every 100 were found to be underweight and severely underweight for their age while 1 out of every 100 was found to be overweight. Eight (8) LGUs have prevalence rate of underweight higher than the regional prevalence rate of 2.63%. First in the list is the City of Juan with 5.13% followed by Malabon City (4.57%), Muntinlupa City (4.57%), Pasay City (4.27%), Manila (3.84%), Pasig City (3.55%), Navotas City (3.39%), Las Piñas City (3.17%), and Caloocan City (2.93%).  Makati City has the lowest prevalence rate of underweight (0.73%).

The prevalence of overweight in NCR shows an increasing trend from 2011 to 2013 (1.14%, 1.18% and 1.33%, respectively). A total of 22,414 children were found to be overweight for their age in 2013. The prevalence of overweight in NCR was found highest in Marikina City (6.9%) and lowest in Las Piñas City (0.39%).