Consisting of high calories, but that is considered only as a broad umbrella. These foods are prepared in a way that they look appealing and are enjoyable so you are chemically programmed to ask for more.
According to Dr. Sunali Sharma, Dietician & Nutritionist, Amandeep Hospital, "Commercial products including but not limited to salted snack foods, gum, candy, sugary desserts, fried fast food, and sweetened carbonated beverages that have little or no nutritional value but are high in calories, salt, and fats may be considered junk foods.
Though not all fast foods are junk foods, but a great number of them are.
For instance, a salad may be fast food, but is definitely not junk food. Some foods like burgers, pizzas, and tacos may alternate between junk and healthy categories depending on the ingredients, calories and process of manufacturing."
In 2016, more than 1.9 billion adults aged 18 years and older were overweight. Of these over 650 million adults were obese.
In 2016, 39% of adults aged 18 years and over (39% of men and 40% of women) were overweight.
Overall, about 13% of the world’s adult population (11% of men and 15% of women) were obese in 2016.
The worldwide prevalence of obesity nearly tripled between 1975 and 2016.
In 2016, an estimated 41 million children under the age of 5 years were overweight or obese.