Her aunt may have died of the autoimmune disease lupus, but if Lady Gaga suffers from it, she's not saying. The hardworking "Bad Romance" singer has suffered several health scares over the past year of touring, including fainting three times in New Zealand. She cites fatigue and heart palpitations as nagging problems as well, saying, "I have heart palpitations and things. But it's okay. It's just from fatigue and other things," Gaga tells People. She admits that her aunt Joanne suffered from lupus, which can be genetic, and that she'd been tested for the disease. "But I don't want anyone to be worried," the singer said evasively. Unfortunately, some of the symptoms from which she's suffering match up with those of lupus. But the jury's out on her diagnosis. Gaga would rather people focus on her healthy habits, such as eschewing drugs, alcohol and smoking. "I really don't do drugs. I don't touch cocaine any more. I don't smoke," she said. "I take care of myself." Sounds like she's virtually unaffected by the Fame Monster.