The day after after being sentenced to 35 years in prison for leaking classified government materials, Bradley Manning declared that she identified as female and preferred to be known as Chelsea Manning. Having struggled with her gender identity for years while serving in the Army, Manning’s gender identity disorder (GID) played a key role in her trial and sentencing. The question remains whether she will receive the hormone replacement therapy she has requested to receive while in prison at Fort Leavenworth. Although the prison has reportedly issued a statement that it does not provide hormone therapy or gender reassignment surgery, recent case law suggests that it may be constitutionally required to do so.In this column I will consider whether Fort Leavenworth must provide Manning with the requested hormone therapy. I will discuss several federal courts’ decisions on the issue, all of which suggest an affirmative answer to this question. Although Fort Leavenworth is not bound by these courts’ rulings, I argue that both as a matter of policy and as a matter of constitutional law, the prison must provide Manning’s requested treatment.