Satiety Response After Mixed Fiber Doses

Inclusion Criteria: * English speaking * healthy men and women * 18 and 65 years of age * non-smoking * not taking medications * non-dieting (weight stable over last 3 months) * BMI between 18 and 27 * able to give blood through an IV Exclusion Criteria: * irregular or erratic breakfast eating patterns * food allergies to ingredients commonly found in muffins or pizza * distaste for muffins or pizza * BMI less than 18 or greater than 27 * weight change \> 5 kg in last 3 months (intentional or unintentional) * cardiovascular disease * diabetes mellitus (fasting blood sugar \> 126 mg/dl) * cancer in prior 5 years (except basal cell carcinoma of skin) * renal or hepatic disease * Crohns disease * ulcerative colitis * any other gastrointestinal conditions that may affect digestion or absorption * recent bacterial infection (\< 3 months) * chronic medication use * history of drug or alcohol abuse in prior 6 months * concurrent or recent intervention study participation * vegetarians * people who ate more than approximately 15 g of fiber per day * pregnant or lactating women * women with irregular menstrual cycles