Where is Vitamin E commonly found?

Correct Answer: D

Rationale: Vitamin E is an antioxidant commonly found in sources like vegetable oils, nuts, seeds, and green leafy vegetables. It plays a crucial role in protecting cells from damage. Choices A and B are incorrect as Vitamin E is not produced by bacteria in the GI tract nor synthesized by sunlight exposure. Choice C is incorrect as beriberi is a deficiency of Vitamin B1 (thiamine), not Vitamin E.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: In patients with renal insufficiency, impaired kidney function can lead to difficulty in excreting phosphorus. High phosphorus levels can result in further complications such as bone and heart problems. Therefore, limiting the intake of phosphorus is crucial. Potassium and sodium restrictions may also be necessary in renal insufficiency, but the primary concern related to nutrients is phosphorus in this scenario. Calcium, while important for bone health, does not typically need to be restricted in renal insufficiency unless there is a specific medical reason to do so.

Correct Answer: A

Rationale: The correct answer is Vitamin B12. Vitamin B12 is primarily found in animal products, so individuals following a vegan diet are at risk of deficiency as they do not consume these sources. Vitamin C, Carbohydrates, and Fiber are not specifically at risk for deficiency in vegan diets as they can be obtained from plant-based sources.

Correct Answer: B

Rationale: Individuals with lactose intolerance lack the enzyme lactase needed to break down lactose. Milk contains lactose, a sugar found in dairy products, and should be avoided by individuals with lactose intolerance. Choices A, C, and D are not sources of lactose and are generally well-tolerated by individuals with lactose intolerance.