A pilot study presented at the World Federation of Chiropractic's 5th Biennial Congress in Auckland, New Zealand, suggests that chiropractic care is superior to placebo for the treatment of infantile colic. A total of 30 infants, aged 0 to 8 weeks, were included in the trial. Fifteen infants received chiropractic spinal manipulation for two weeks. The remaining subjects received placebo ("sham" non-functional ultrasound). Based on parental reports at 1-month follow-up, the study's authors found "a statistically significant difference in the response to treatment by the experimental group as opposed to the placebo group."
World Federation of Chiropractic - May 1999.