Explanation:
Sodium hydroxide is used in the manufacture of sodium salts and detergents, pH regulation, and organic synthesis. In bulk, NaOH is most often dissovled in water since it is cheaper and easier to handle. Sodium hydroxide is often used in bar soaps.
Pediatrician
Gastroenterologist
Cardiologist
(I believe almost any kind of doctor would suffice!)
10% to 35% should come from protein per day