In the united states, deficiency is the most common nutritional deficiency.

In united states. Iron deficiency is the most common nutritional deficiency.
Iron deficiency is actually really easy to obtain since it's contained by a lot variation of Green Vegetables.
But in recent years, Average people's diets are focused on high-carbs and high-fat food which do not contain any form of iron in it.

The answer to your question is  it relieves stress and boredom.  the rest of the answer choices would be long term.