Which of the following nutrients plays a crucial role in the regulation of methylation reactions in the body?

A Vitamin B12
B Folic acid ✓
C Vitamin B6
D Choline

Explanation

Folic acid plays a crucial role in the regulation of methylation reactions in the body, particularly in the synthesis of methionine from homocysteine. This process is essential for various bodily functions, including DNA synthesis and repair.

Source

Harper's Illustrated Biochemistry
Metabolic and Nutritional Disorders Nutrition and Biochemistry Methylation Reactions Hard MEDICAL Confidence: high