In 2002, Robert Dallek wrote an extensive history of Kennedy's health. Dallek was able to consult a collection of Kennedy-associated papers from the years 1955–1963, including X-rays and prescription records from the files of White House physician Dr. Janet Travell. According to Travell's records, during his presidential years Kennedy suffered from high fevers; stomach, colon, and prostate issues; abscesses; high cholesterol; and adrenal problems. Travell kept a "Medicine Administration Record," cataloguing Kennedy's medications: "injected and ingested corticosteroids for his adrenal insufficiency; procaine shots and ultrasound treatments and hot packs for his back; Lomotil, Metamucil, paregoric, phenobarbital, testosterone, and trasentine to control his diarrhea, abdominal discomfort, and weight loss; penicillin and other antibiotics for his urinary-tract infections and an abscess; and Tuinal to help him sleep."