Methods for measuring dietary intake effectively include 24-hour dietary recalls, food frequency questionnaires, and dietary logs. Each method provides different insights, helping researchers understand consumption patterns and nutritional intake. The 24-hour recall involves participants describing everything they consumed in the past day, yielding detailed information about portion sizes and food types. Food frequency questionnaires assess how often certain food items are consumed over a specified period, helpful for identifying dietary habits. Dietary logs require participants to track their intake over several days, providing real-time details about their eating behaviors.