I have two stories:
My mother left me (age 4 months), my 2 sisters and my brother (the oldest at age 5) because she was tired of us. Over the years she has not been totally out of our lives. Even now at age 45, I still see her once a year or so and my siblings sometime see her more often than that because they live closer. My mother has two sisters, one of whom never married and has no kids, the other was married and had two sons. All 6 of them went together to have family pics done. My mother was showing my sister and me these 'family' pics when she made the statement, 'Yeah, the whole family just decided one day to get together and have our picture taken and here is the whole family.'... she says as she hands the pics to us. Seemed to me that the 'family' picture was missing 4 people but I guess I was looking at the pic differently than she.
When I was 28, I was the single mom of two girls. I decided college was the only way to have a decent life for my kids. I knew it was going to be extremely tough and was hoping my family would help me out. I went to my father and step-mother and asked if I needed household things, if they would be willing to help me out. Things like laundry detergent, shampoo, etc etc. NOT money. They told me how proud they were of my decision and yes, they would help if needed. I wrote my mother a letter (I had no phone and she lived an hour away) and asked the same of her. I figured this way it would not be to big of a burden to anyone. Two days later, I walked in my house to find her sitting at my kitchen table. She wrote me a check for $100 and told me I needed to get off of my lazy *ss and get a job and work myself to the top and walked out the door. (Of course, now I make about 70,000 a year and rub it in her face when I can)
My point is this: Just because they are your parent doens't mean you have to put up with their crap. There is a reason I only see my mother once a year or so. If being around your mother makes you want to overdose on carbs, maybe you should make an executive decision.