What symptoms may indicate a deficiency in vital nutrients?

Fatigue, weakness, and decreased immunity are significant symptoms that often indicate a deficiency in vital nutrients. These symptoms are commonly associated with deficiencies in key nutrients such as iron, vitamin D, and certain B vitamins, among others.

When the body lacks essential nutrients, it can lead to a decrease in energy levels, resulting in fatigue and weakness. For instance, iron deficiency can prevent the body from producing enough hemoglobin, which results in anemia and increased feelings of tiredness. Furthermore, a compromised immune function can be a direct result of inadequate levels of vitamins such as vitamin A, vitamin C, and various B vitamins that are crucial for immune response. This triad of symptoms—fatigue, weakness, and decreased immunity—serves as a strong indicator that the body is not receiving the essential nutrients it needs to function optimally.

The other options present symptoms that can be linked to various health issues but are not as clearly indicative of nutrient deficiencies. For example, nausea and headaches can result from several causes, including stress, dehydration, or other health conditions. Similarly, dry skin and brittle hair often relate to various dermatological or environmental factors, while increased appetite and irritability can stem from psychological factors, hormonal changes, or lifestyle choices, rather