Lumen Foods ( ), a manufacturer of soy-based foods and beverages, has posted warning labels on its soymilk products in response to growing research that the high manganese levels found in soy beverages, and in particular, infant formula, may be neurotoxic to infants under the age of six months. The label reads: "WARNING: Soymilk may be detrimental to infants under 6 months of age. It contains manganese at levels important to human nutrition but over 50 times the level found in mother's breast milk. For more information, see