Final answer:
Individuals with calcium deficiencies should be cautious when taking vitamin E or K supplements, as vitamin D play a critical role in calcium absorption. Excessive intake of these vitamins can exacerbate deficiency conditions like rickets or osteomalacia.
Step-by-step explanation:
Taking vitamin E or vitamin K supplements can be especially harmful for those with calcium deficiencies. Vitamin E is required for fertility and many other cellular functions, while vitamin K is crucial for blood clotting. However, individuals with calcium deficiencies should be cautious with these supplements. Vitamin D is essential for calcium absorption, and a lack of it can lead to depletion of calcium stores, potentially causing rickets in children or osteomalacia in adults.
Excess intake of vitamin E can lead to symptoms like nausea, and excessive vitamin K can also be toxic. It's important to consult with a healthcare provider before taking such supplements, especially for those with underlying health issues, like calcium deficiencies, which can be exacerbated by improper vitamin intake. Dietary sources of these vitamins, rather than supplements, are often recommended.