There are a lot of written studies about this, but very little research you can do in person. Discussing obesity with an older person, and even subjecting them to tests, is a socially acceptable thing to do (so long as they are willing). However, any form of tests or interviews with children is morally unsound without strict guidelines and counseling that you are unlikely to be able to afford. Trying to interview or test obese children is the first mistake you should avoid, and here are some more.
Not stating your thesis correctly
When writing a research paper on childhood obesity, a lot of people give a vague thesis which normally involves as argument such as the “nature or nurture” argument. However, the thesis is often vague and generalized, so you need to make sure that yours is a strong one. You need to make a strong statement and then show how your research paper displays an answer to the statement.
Misinterpreting the figures you research
Even though there are a lot of figures out there for you to include in your research paper on childhood obesity, you still need to put them into context. Many parents will not admit on surveys that their children are obese, nor will they take them for health checkups about it. This means that certain areas and certain demographics are going to have lower incidence rates than your figures point out.
Adding opinion where there should be facts
A lot of people have an opinion on this subject, but few people are passionate about the subject. Therefore, a lot of people add a passive opinion to their research paper on childhood obesity, and therefore make their research less credible. In your conclusion, if you would like to give your opinion then do so, just make sure it is clearly defined as an opinion.