The Organic Center was responsible for the most influential organic research of 2019, collaborating on a study showing that choosing organic is an easy way for you and your family to avoid pesticide, antibiotic, and synthetic growth hormone residues in milk. Samples of conventional and organic milk from retail stores across the country were tested. A majority of the conventional milk samples tested positive for residues of antibiotics and pesticides, while organic milk showed no such contaminants. Furthermore, residues of growth hormones in conventional milk were 20 times higher than in organic.