Seventeen major food manufacturers earned an average grade of F for their lack of progress in reducing pesticides in the products they sell, according to a new analysis by As You Sow, a nonprofit specializing in shareholder advocacy. "It's disheartening to see so many bad grades across the board for these major food production companies," said Jane Houlihan, research director for Healthy Babies, Bright Futures. "Studies find the highest amounts of pesticides in some of the most popular foods children eat " berries and apples, for example," said Houlihan. "Pesticides are also found in breast milk and umbilical cord blood, meaning that exposures start before birth and continue through infancy and beyond." Long-term exposure to pesticides has been linked to cancer, asthma, anxiety, Parkinson's disease, depression, and attention deficit and hyperactivity disorder, according to the report. Kale, collard and mustard greens contained the largest number of pesticides " 103 types " while nearly 90% of blueberry and green bean samples had concerning findings, according to the analysis. Green bean samples contained extremely high levels of acephate, an insecticide banned for use in the vegetable in 2011. Blueberry samples contained acephate, phosmet and malathion " organophosphates which interfere with the normal function of the nervous system. What can consumers do? Choosing organic foods is a surefire way to reduce pesticide exposure.