Vitamin A helps cells reproduce normally, in a process known as differentiation.  Cells that have not properly differentiated are more likely to undergo precancerous changes.  Vitamin A is important for the health and integrity of the cell plasma membrane.  As a fat-soluble antioxidant, it can get into the cell, provide protection, neutralize free radicals, and prevent oxidative stress.

A half-cup serving of broccoli, spinach, or cantaloupe contains enough vitamin A (in its precursor form, carotene) to meet the RDA for this nutrient.  For antioxidant benefits, I recommend between 5,000 and 10,000 IU of vitamin A each day.  Bear in mind that the liver stores vitamin A – and a buildup can be toxic.  To avoid problems, do not exceed dosage recommendations for this and other fat-soluble vitamins.  It is also important to note that many foods that are high in vitamin A can cause an inflammatory response as a result of their high sugar content.  These include sweet potatoes and yams, which I recommend you avoid.

What are your favorite food sources of vitamin A?