World food day is observed on 16 October:

World Food Day is observed on 16 October every year. The day is observed every year by people from around the world. The day aims to tackle global hunger. On this day, people reaffirm their commitment to eradicate worldwide hunger for a lifetime. 

Theme:

The theme for 2019 is Our Actions Are Our Future. Healthy Diets for A #ZeroHunger World. The diet and eating habits of the people have changed because of urbanization and income growth. It causes obesity and other related diseases among the people. The theme focuses on creating awareness about a healthy and nutritional diet. 

FAO reported that 40 million children under 5 are overweight. One hundred twenty million girls and boys of the age group 5 to 18 years, and 670 million adults are obese. Around 820 million people across the world suffer from hunger. 

History:

The World food day was established by the member countries of the Food and Agriculture Organisation (FAO) in November 1979 at the 20th General Conference. On 16 October 1981, The United Nations General Assembly (UNGA) announced the observation of the World Food Day on 16 October. The first World food day was observed in 1981. The day aims to honor the establishment date of FAO. 

Food and Agriculture Organisation (FAO):

Food and Agriculture Organisation is a specialized agency of the United Nations, which leads international efforts to defeat hunger. It was established as a specialized agency in 1945. FAO aims to provide food security for all the people across the world. It also ensures that people have regular access to enough high-quality food to lead active, healthy lives.