Nutritionally deprived newborns' brains are "programmed" to eat more because they have fewer pathways for signalling fullness in the brain region that controls appetite: the discovery is a new clue for the link between low birthweight and obesity later in life, concluded a study published this week in the journal Brain Research.Researchers from Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center (LA BioMed) compared the brains of low birthweight newborn rats whose mothers had a 50% food-restricted diet during pregnancy to those of rats born to mothers who had free access to food during pregnancy.