Final answer:
Beta-carotene acts as an antioxidant and has various protective effects but does not directly enhance the immune system.
Explanation:
Beta-carotene acts as a powerful antioxidant and helps prevent damage from free radicals in the body, but it does not enhance the immune system directly. The effects of beta-carotene include protecting the eyes from damage, functioning as a very strong antioxidant, and protecting the skin from UV damage. It is important to note that beta-carotene, when consumed excessively in supplement form, has been associated with increased rates of cancer and death.
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