I know that diabetes is a common disease and people can lead very healthy lives. What I'm concerned about it my mom has been eating semi-unhealthily for several years and have had tingling and numbness in her feet and legs for two years. I don't know how long she's had it and whether or not she's made it worse over the years. I'm really worried about her. Now that she knows she has it, she's going to eat healthier and exercise more, but I'm still scared that the damage has already been done. She's 64 and I'm 15 (I'm adopted); will she be okay?