Final answer:
The client is at risk for a vitamin D deficiency due to limited sun exposure from covering skin and lactose intolerance preventing dairy consumption, which could affect bone health and immunity.
Step-by-step explanation:
The client is at risk of developing a vitamin D deficiency. This is due to the combination of a religious requirement to keep skin covered, thereby limiting sun exposure which is a natural source of vitamin D, and lactose intolerance preventing them from consuming most dairy products, a common dietary source of this vitamin. Vitamin D plays a crucial role in bone health and immunity, and a lack of it can lead to conditions such as rickets and increased susceptibility to infections. Vitamin D is synthesized in the skin when it is exposed to sunlight.
Additionally, the client's lactose intolerance may also increase her risk for a calcium deficiency since she does not consume milk, which is a major source of calcium. Overall, individuals who cover their skin for religious reasons and also have lactose intolerance should consider alternative sources of vitamin D, such as supplements or fortified foods, to prevent a deficiency.