how is it associated with genetics?
Like many other medical conditions, obesity is the result of an interplay between genetic and environmental factor and Polymorphisms in various genes controlling appetite and metabolism predispose to obesity when sufficient food energy is present.
Obesity
Like many other medical conditions, obesity is the result of an interplay between genetic and environmental factors. Polymorphisms in various genes controlling appetite and metabolism predispose to obesity when sufficient food energy is present. 
where does the sugar in fruit come from Fructose where did it get its name from? Sanskrit ("śarkarā"), meaning "ground or candied sugar", came Persian "shakar". does it cause tooth decay? Yes, in 2003 WHO report stated that "Sugars are undoubtedly the most important dietary factor in the development of dental caries". how is it obtained? They are common in fruits and vegetables. how is it associated with sugarcane? They have been cultivated in tropical climates in the Indian subcontinent and Southeast Asia over centuries for the sucrose found in their stems. what other health issues does it create? Obesity, metabolic syndrome, type 2 diabetes, hyperactivity etc how is the first disease classified? It is defined by body mass index (BMI). what are its causes? A combination of excessive food energy intake and a lack of physical activity, while some are genetic, medical reasons or psychiatric illness etc
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Obesity [SEP] Genetics
Like many other medical conditions, obesity is the result of an interplay between genetic and environmental factors. Polymorphisms in various genes controlling appetite and metabolism predispose to obesity when sufficient food energy is present. As of 2006, more than 41 of these sites on the human genome have been linked to the development of obesity when a favorable environment is present. People with two copies of the FTO gene (fat mass and obesity associated gene) have been found on average to weigh 3–4 kg more and have a 1.67-fold greater risk of obesity compared with those without the risk allele.