Loren May, an inmate of the Federal Correctional Institution in Forrest City, Arkansas, appeals the district court’s 1 grant of summary judgment to defendants Warden T.C. Outlaw and Safety Manager Ronald Smith. May asserted that they violated his Eighth Amendment rights by knowingly subjecting him to an environment containing “black mold,” which caused him a number of illnesses. Because undisputed evidence shows that Outlaw and Smith took meaningful, affirmative steps to reduce the amount of mold present at the prison facility, we conclude that neither defendant was deliberately indifferent to May’s medical needs or health *598 risks. See Nelson v. Corr. Med. Servs., 583 F.3d 522, 528-29 (8th Cir. 2009) (prison official violates Eighth Amendment if official knows of and disregards serious medical need or substantial risk to inmate’s health or safety).

Accordingly, we affirm the judgment of the district court. See 8th Cir. R. 47B.