Which one of the following is not a nutrition deficiency disease?

Concept: Obesity is an illness in which extra body fat has accumulated to the point where it is likely to be harmful to one's health. Obesity is typically diagnosed using the body mass index (BMI). BMI is a measure of body fatness calculated from a person's weight in relation to their height.

Obesity is not a nutrition deficiency disease. It is a condition when a person has accumulated so much body fat. 

Marasmus is due to deficiency of carbohydrates and proteins. Scurvy is due to deficiency of vitamin c. Kwashiorkor is due to deficiency of protein.