Human growth hormone uses scrutinized by CongressCongress is taking a tough look at the use of human growth hormone (HGH) for a wide variety of conditions that has prompted some concern that players may react by limiting reimbursement for legitimate purposes.

Dr. Richard Hellman, president of the American Association of Clinical Endocrinologists, said in an interview that insurers are already reluctant to cover scientifically validated uses of HGH.

Dr. Hellman, a clinical professor of medicine at the University of Missouri-Kansas City, said the continuing use for purposes that have little to no evidence of safety and effectiveness may ultimately endanger patients who genuinely need HGH.