Beriberi is caused by deficiency of vitamin ________

Explanation

Beriberi is a disease that is caused by a deficiency of a particular vitamin. The question is asking us to identify the specific vitamin that causes beriberi. From the options given, we have vitamin A, D, K, and B. We need to select the correct vitamin that causes beriberi. The correct answer is option D, which is vitamin B. Beriberi is caused by a deficiency of thiamine, which is also called vitamin B1. Thiamine is important for the proper functioning of the nervous system and the heart. It is found in foods such as whole grains, meat, fish, beans, and nuts. It is important to note that there are different types of beriberi, such as wet beriberi and dry beriberi, and they can affect different parts of the body. Wet beriberi affects the cardiovascular system, while dry beriberi affects the nervous system. Severe thiamine deficiency can also lead to a condition called Wernicke-Korsakoff syndrome, which affects the brain and can cause memory loss and confusion. In conclusion, the correct vitamin that causes beriberi is vitamin B or thiamine. It is important to eat a balanced diet that includes sources of thiamine to prevent deficiency and the associated health problems.