QULJLIUM
According the the documentary, The Skinny on Obesity, which of the following substances added to food has contributed to the obesity epidemic?
sugar
vitamins and minerals
protein
fiber

sugar

Explanation:

The Skinny on Obesity is a documentary made by Dr. Lusting and his colleagues from the University of California, San Francisco. It aims at decoding the obesity epidemic. It demonstrates the reasons for rising obesity,  relationship between stress and obesity and how the future generations are going to be impacted by it.

In the documentary, sugar was shown as the main contributor to the obesity problem. Addition of sugar to almost all the processed food items has led people to consume huge amounts of sugar unknowingly. The extra sugar is converted into fats which ultimately makes a person obese. It can also lead to problems like insulin resistance, which further cause obesity.

i think it is dna, i'm not totally sure but i think it might be.

to this answer it would be edge enhancement