Vitamin D - 3 also plays an important role in regulating cell growth, insulin levels, and bone formation. (energeticnutrition.com)
It interacts with an enzyme in the human body that helps regulate cell growth and control immune response. (sciencenews.org)
It triggers the action of enzymes and is an important component of proteins responsible for regulating cell growth, reproduction and death. (healthyeating.sfgate.com)