Answer: Depression really has profound effects on the immune system. Depression can cause increases in a variety of stress hormones such as cortisol and adrenaline and various other inflammatory substance such as interleukin-6.
There are 43,560 square feet in a acre; this is 4,840 square yards. You can find a conversion calculator at http://www.unitconversion.org/area/acres-to-square-foots-conversion.html Originally, the size of an acre was approximately the amount of land an ox could plow in a day. Now, I donât know about you, but that approximation means virtually nothing to me.
43,560 square feet = 1 acre. The math is straight-forward for converting square feet to acres â just divide your propertyâs square footage area measurement by 43,560. The result is the land area in acres. For example, if you have a 17,200 sf lot and need to know the acreage: 17,200 sf / 43,560 = .39 acres.