What can be a result of consuming foods with added antioxidants?

Consuming foods with added antioxidants can lead to improved immune system function due to the protective role antioxidants play in the body. Antioxidants, such as vitamins C and E, and other compounds found in fruits, vegetables, and fortified foods, help neutralize free radicals. These free radicals are unstable molecules that can cause oxidative stress, leading to cellular damage and various illnesses.

By reducing oxidative stress, antioxidants can support the immune system, enhancing its ability to fight infections and potentially lowering the risk of chronic diseases. This supportive role can lead to overall improved health and a more robust immune response.

The other choices do not reflect the known benefits of antioxidants. For instance, decreased immune system efficiency is counterproductive to what antioxidants aim to achieve, while weight gain is not directly associated with the intake of antioxidants themselves. Lastly, an unpleasant aftertaste is not a common characteristic of foods fortified with antioxidants.