Haley Zelenka was diagnosed with acromegaly, a condition resulting from a pituitary gland tumor, in 2002. Zelenka's personal story about her health struggles with acromegaly appears in the book Alone in My Universe, which was compiled by Wayne Brown. In the book, which includes stories of numerous people who have been diagnosed with the disease, Zelenka shares her own unique story of struggling with the disease. Many people have never heard of it, and it generates little awareness. Through the book, Zelenka helps to change that.