Final answer:
Vegetarians, pregnant women, and toddlers are at risk for iron deficiency, which can be due to dietary choices, increased physiological needs, or malabsorption. Intake of sufficient iron is crucial to prevent anemia, and vegetarians may require higher intake due to phytates in cereals that inhibit absorption.
Step-by-step explanation:
Clients at risk for iron deficiency include pregnant women, vegetarians, and those with dietary or absorption issues. Specifically:
While a toddler who is overweight and a middle adult male client are less likely to be at risk compared to the groups above, they can still develop iron deficiency under certain conditions, such as poor diet or malabsorption issues. Typically, healthy adult males and postmenopausal women have a lower risk unless they experience chronic bleeding or malabsorption.