Sorry for the previous reply from the person sending spam. Please ignore it.
Type 2 diabetes (T2D) is becoming a global problem of alarming proportions and is affecting people at younger ages. I know people who have it so am fairly familiar with the causes and treatments. The disease can have pretty awful consequences if not controlled, but drugs, diet and exercise (losing weight!) all help to keep it in check.
If you haven't already done so, check the project ideas tab on Scibuddies for diabetes: http://www.sciencebuddies.org/science-f ... s=diabetes
It is easy to measure one's blood sugar today with the new glucose meters and perhaps your family members who have T2D already use them. Diet is a big part of controlling T2D and your relatives could keep a food diary to see if what they are eating is raising or lowering their fasting blood sugar level. Here's some information on how to eat when you are trying to get your blood sugar down to normal: http://www.webmd.com/diabetes/guide/eating-right
Do you have any special interests with regard to the kinds of experiments you might like to do? A lot of research is done on cells in the lab to test new drugs and treatments, but unless you have access to a university lab and someone to teach you how to work with cells, such a project would be difficult.
One of the cool new technologies that I like are the wearable monitors that can relay information to a smart phone. There is actually a gadget like a watch that is supposed to be able to measure blood glucose levels without drawing blood: http://www.sciencedaily.com/releases/20 ... 122012.htm
Such a device would be a real blessing to a diabetic. There are other sensors you can wear while you are exercising that will measure your pulse rate and activity level. My smart phone has a WalkMate that tells me how many steps i take during the day, how many miles I go (the daily goal is at least 5 miles!) and how many calories this burns up.
I would suggest you ask your mom and aunt what questions they might like to see answered about their condition--as long as they can be done with the resources you have and the time you can spend. Also do some searching and reading about T2D and see what sorts of things are not known about the disease and whether you could set up a project to study them. It's great that you really want to help people through science. That's what it's all about!