no one knows exactly but the national heart lung and blood institute (nhlbi) national cholesterol education program (ncep) recommends checking cholesterol after 6 weeks after diet changes are initiated. always check in with your health care provider about recommendations for monitoring cholesterol levels. for more help with managing cholesterol visit webmd's cholesterol management health center <link>
how soon does the food you eat affect your cholesterol? how long does food you eat affect your cholesterol?