Vitamin A is a group of fat-soluble retinoids that are involved in vision, growth, reproduction, and immune function. Vitamin A deficiency can cause night blindness, dry eyes, and increased risk of infections.
Vitamin D is a group of fat-soluble secosteroids that regulate the absorption of calcium and phosphorus, and the maintenance of bone and muscle health. Vitamin D deficiency can cause rickets, osteomalacia, and increased risk of fractures.
Vitamin E is a group of fat-soluble tocopherols and tocotrienols that have antioxidant and anti-inflammatory properties. Vitamin E deficiency can cause hemolytic anemia, neurological disorders, and impaired immune function.
Vitamin K is a group of fat-soluble quinones that are essential for blood clotting and bone metabolism. Vitamin K deficiency can cause bleeding disorders, osteoporosis, and increased risk of cardiovascular diseases.
Coenzyme Q10 is a fat-soluble quinone that is involved in mitochondrial electron transport and energy production. Coenzyme Q10 deficiency can cause muscle weakness, cardiomyopathy, and neurological disorders.