What is systemic lupus erythematosus?What are the main signs and symptoms of systemic lupus erythematosus?How is systemic lupus erythematosus diagnosed?What are some of the main medical treatments for systemic lupus erythematosus?Have any supplements been studied for systemic lupus erythematosus?How could diet affect systemic lupus erythematosus?Are there any other treatments for systemic lupus erythematosus?What causes systemic lupus erythematosus?Does systemic lupus erythematosus only affect adults?Are some people at a higher risk for developing systemic lupus erythematosus?What role does psychological stress play in systemic lupus erythematosus?Does the microbiome play a role in systemic lupus erythematosus?Can certain supplements cause or worsen systemic lupus erythematosus?What is the most common blood test for systemic lupus erythematosus?Can people with systemic lupus erythematosus use hormonal contraceptives?Does systemic lupus erythematosus affect fertility and/or pregnancy?Should people with SLE take vitamin D?