Vitamin D2 and vitamin D3 are the forms of vitamin D most important to human health, according to the Mayo Clinic. Vitamin D2 is manufactured by plants, while vitamin D3 is manufactured in the skin when it's exposed to the sun.
Population in families living in Washtenaw County ; Total Population: 238,069; Population Under 18 years: 70,878; Population 18 years and over: 167,191
The 2010 Census gave Lenawee County a population of 99,892 people. This means that Adrian had 21.16% of the county's total population, making it Lenawee's most populous community. At the same time, Michigan had a population of 9,883,640 people, meaning that Adrian had 0.21% of the total population of Michigan - making it the state's 52nd most populous community.