At risk of developing vitamin D deficiency:
Breast fed babies.
Pregnant and breast feeding women.
Young kids up to the age of six years.
Every people aged 65 years and over.
People who have darker skin.
Individuals whose skin doesn't get enough sun.
Those who suffer with certain intestinal, liver or kidney diseases.
Do not diagnose yourself, always consult with your Doctor prior to introducing food supplements to your normal routine.