**5.5 Factors affecting vitamin D food fortification**

Vitamin D food fortification is affected by factors such as availability of fortificants and suitable vehicles for the fortificant [24]:

	- a.Widely consumed food must be used as fortification vehicle, financially available, and consumed all through the year.
	- b.The fortification vehicle must ensure an even scattering by economical technologies.
	- c.Vitamin D bioavailability in fortified items, for example, milk, milk powder, and cheddar.
	- d.Vitamin D fortification vehicle must have negligible olfactory impact.
