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
Sparta Township is in northern Kent County, Michigan. We are conveniently located 15 minutes north of Grand Rapids and 30 minutes from the Lake Michigan shoreline. The west half of the township is on the âRidgeâ, a prime fruit-growing area, with many acres of beautiful orchards. At the center is the Village of Sparta, a thriving small town.