Which nutrient assists in the absorption of fat-soluble vitamins?

The nutrient that assists in the absorption of fat-soluble vitamins is dietary fat. Fat-soluble vitamins, which include vitamins A, D, E, and K, require the presence of dietary fat for effective absorption in the intestines. When dietary fat is consumed, it stimulates the secretion of bile from the liver and pancreatic enzymes that emulsify fat, making these vitamins more accessible for absorption through the intestinal lining.

Without dietary fat, these vitamins cannot form micelles—a necessary step for their absorption—resulting in reduced bioavailability. This demonstrates the synergistic relationship between dietary fat and fat-soluble vitamins, emphasizing the importance of including healthy fats in meals to ensure that the body can properly absorb these essential nutrients.