Several studies support the idea that colicky symptoms may be linked to mild bio-mechanical disturbances of the spinal joints, affecting nerve system function which may be helped by chiropractic adjustments. A large, preliminary study reported significant improvement in colic, often after only a single chiropractic adjustment. Another study revealed that 91 percent of parents observed improvement in their babies’ symptoms after two to three adjustments. In a trial, infants were given either a placebo medication or a series of three to five adjustments using gentle “fingertip” pressure over two weeks. Infants receiving the spinal adjustments experienced a 67 percent reduction in daily hours of crying, compared with only a 38 percent reduction in infants on placebo medication.