High levels of "bad" cholesterol or low-density lipoprotein (LDL)-cholesterol levels in growing children can be reduced significantly for up to three years, say researchers from the United States Dietary Intervention Study in Children (DISC) collaborative research group. This group studied the efficacy and safety of a cholesterol-lowering dietary intervention in children. A group of 663 children aged between eight and 10 years, with high levels of LDL-cholesterol were randomised to either a dietary-intervention or a usual-care group. The children were followed for approximately 7.4 years. Results indicated that reductions in total dietary fat, saturated fat and cholesterol were greater in the dietary-intervention group than in the usual-care group. "Changes in the usual-care group's diet suggest that pediatric practices and societal and environmental forces are having positive public-health effects on dietary behaviour during adolescence," commented the researchers. Full findings are published in the Pediatrics journal, 2001; 107: 256-264.