I would pay special attention to the ingredients and nutritional facts on the back of the box. Certain ingredients which may not contribute heavily to nutritional facts, can still prove to be detrimental to ones health. Also it's pretty natural to look for health information on the Nutritional facts, if you need to find what is health related.
An overweight person is highly susceptible to disorders like heart problems or stroke, high blood pressure, diabetes even some breathing problems such as sleep apnea and asthma