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After a low-sunlight winter, a student who drinks only unfortified milk feels bone aches. What most likely...

After a low-sunlight winter, a student who drinks only unfortified milk feels bone aches. What most likely caused this?
Low vitamin A weakened the protective tissues that line the body, although this does not explain the aching linked to vitamin D deficiency.
Low vitamin K prevented normal clotting functions, yet it does not account for the type of joint or bone aching caused by low vitamin D.
Low vitamin D intake that weakens calcium absorption.
Low vitamin E reduced muscle protection from oxidative stress, but it is not directly related to the bone discomfort described.

Answer

The most likely cause of the bone aches in the student who drinks only unfortified milk after a low-sunlight winter is:

Low vitamin D intake that weakens calcium absorption.

Vitamin D plays a crucial role in calcium absorption in the body. Without sufficient vitamin D, the body is unable to absorb calcium effectively, which can lead to a deficiency in calcium levels. This deficiency can result in weakened bones and may manifest as bone pain or aches, often characterized as discomfort or soreness in the bones. Furthermore, low levels of sunlight during winter can lead to decreased vitamin D synthesis in the skin, exacerbating the deficiency, especially in individuals with limited dietary sources of this vitamin, such as those who consume only unfortified milk.

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