Which of the following can contribute to anemia and may cause RLS?

Iron deficiency is a well-known cause of anemia, which occurs when there is a lack of healthy red blood cells to carry adequate oxygen to the body's tissues. This deficiency can lead to various symptoms, including fatigue and weakness. Additionally, iron plays a crucial role in the production of dopamine, a neurotransmitter that regulates movement and is often implicated in Restless Legs Syndrome (RLS). Consequently, individuals who are iron deficient may experience exacerbated symptoms of RLS due to the disruption in dopamine production.

In contrast, while dehydration can impact overall health and wellness, it is not directly linked to anemia or RLS in the same way iron deficiency is. Weight gain and high cholesterol primarily relate to metabolic and cardiovascular health rather than specifically to anemia or RLS. Thus, iron deficiency stands out as the primary contributor to both anemia and the potential exacerbation of RLS symptoms.