Fat-soluble vitamins
The fat-soluble vitamins are lipid molecules and therefore have low density, are insoluble in water and soluble in organic solvents, fats and oils. Vitamins A, D, E and K. belong to this group.
They can be stored in the liver and in the body's fat, so it is not necessary to take them every day, since it is possible, after sufficient consumption, to subsist for a time without their contribution.
If consumed in excess (more than 10 times the recommended amounts) they can be toxic.