Do the students in the research study have any health concerns that would lead to weight gain like diabetes or hypothyroidism?

 Do the students in the research study have any health concerns that would lead to weight gain like diabetes or hypothyroidism?
This is important to know because if the students in the studies had other health concerns with weight gain as a side effect, then the values of the results would be inaccurate.
How many students were surveyed in this pool of college students?

 For example if 50 students were surveyed in this research study then it would mean that only 10-15 students of that 50 were reported obese, to give us the values of 25% and 30%. If the sample size is too small, it can give an inaccurate representation considering that average college campus populations are usually in the upper thousands.
Did the students in the survey all consume alcohol? If yes, then how much and how often did they drink?
The concluding sentence of the research suggests that alcohol consumption is one of the leading causes of obesity amongst college students. Something to remember is, not all college students drink. Of those who do drink, there are so many categories of drinking styles. So without hard evidence that all the college students drank and drank the same amount, there is no reliable proof to this being one of the leading causes of obesity.

2. 
1. What studies have shown that college students are vulnerable to obesity?
2. Why do researches believe that it is the lack of access to healthy foods and increase in alcohol consumption and how can we gain more access to healthy foods?
3. How can we reduce the percentages in this passage?
I feel like that sources make a huge impact in our papers or short passages. With that being said, I would like to know where the studies are that shows college students are “vulnerable” to obesity. 
How is there lack of access to healthy food? Vending machines throughout a campus is filled with junk food, but that does not mean you have to eat from the vending machine. Walmart has plenty of healthy foods and its pretty easy to access a Walmart.
If the statistics are right I feel like we should put healthier foods in the vending machines to hopefully reduce the percentages that is listed in this passage.