Posible causes of obesity

. Genetics is a predisposing factor,  however the alarming increase in obesity in recent decades appears to indicate that genes are not the only cause. Stephen O’Rahilly, professor of clinical biochemistry and medicine at Cambridge University in England, declares: “Nothing genetic explains the rise in obesity. We can’t change our genes over 30 years. commenting on the causes, the Mayo Clinic, in the United States, says: “Although there are some genetic and hormonal causes of  obesity, most excess weight is caused by  eating too much and exercising too little.this leads to dificiency in energy ballance
This simply means that the person is not able to use and consume the energy that is stored in his or her body. The food a person takes in is a major source of energy and if the calories is not used or consumed, the tendency is the individual will become obesed
 Two examples illustrate the changing trend in eating habits today.
First, as working parents have less time and energy to prepare meals, fast food has increasingly become the norm. Fast-food restaurants have sprung up all over the world. One study reported that nearly a third of all children in the United States aged 4 to 19 eat fast food every day. Such foods are typically high in sugar and fats and are offered in temptingly large sizes.
Second, soft drinks have replaced milk and water as the beverage of choice. For example, Mexicans spend more each year on soft drinks, particularly colas, than on the ten most basic foods put together. According to the book Overcoming Childhood Obesity, just one 20-ounce soft drink a day can result in a gain of 25 pounds in a year!
LACK OF PHYSICAL ACTIVITY=A study carried out by the University of Glasgow in Scotland found that the average three-year-old engages in “moderate to vigorous activity” for only 20 minutes a day. Commenting on that study, Dr. James Hill, professor of pediatrics and medicine at the University of Colorado, said: “The increasingly sedentary nature of U.K. [United Kingdom] children is not unique and is being seen in most countries around the world
Living a sedentary lifestyle can also contribute imersely to obesity.Some individuals do not spend time exercising and just prefer to watch movies at home.The lack of physical activities due to being overly dependent on high end technologies, and the lack of physical education contributes to obesity.It is important for individuals who do not want to become obesed to move every once in a while, that way calories will be burned and thus keeps the individual from getting overweight.