Certified Dietary Manager (CDM) Practice Exam 2026 – All-in-One Guide to Exam Success!

Excessive intake of vitamin A can lead to a condition known as hypervitaminosis A, which is characterized by toxicity levels caused by an overload of vitamin A in the body. This can occur through consuming high-dose supplements or an excessive intake of vitamin A-rich foods, particularly those high in preformed vitamin A (such as liver). Symptoms of hypervitaminosis A can include nausea, headache, dizziness, blurred vision, and in severe cases, it can lead to liver damage and central nervous system issues.

Understanding the nature of vitamin A is crucial; it is a fat-soluble vitamin, meaning it can accumulate in the body's tissues. Unlike water-soluble vitamins, which are excreted in urine when taken in excess, fat-soluble vitamins can pose a risk of toxicity when consumed in high amounts over time.

Other choices in the question do not relate to vitamin A toxicity: Scurvy is caused by a deficiency of vitamin C, osteoporosis is primarily related to calcium and vitamin D deficiencies or hormonal changes, and anemia can arise from various nutritional deficiencies including iron, vitamin B12, or folate. Thus, hypervitaminosis A is the clear consequence associated specifically with excessive vitamin A intake.