When preformed vitamin A is withheld from certain products and supplements, beta-carotene doesn’t build up to active concentrations.
Food sources versus supplements
Vitamin A occurs naturally in many ingredients, including:
Carrots, sweet potatoes, and pumpkin
Spinach and kale
Liver, eggs, and dairy products
Getting vitamin A from food is considered the safest way, because your body regulates its own metabolism and absorption. Supplements can deliver large doses directly, bypassing natural regulation.
Pharmacist’s advice
Pharmacists seem to believe that supplements should never replace a balanced diet. For most people, eating
