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.
Acres to square feet (ac to ft2) area units conversion factor is 43560. To find out how many square feet in an acre, multiply by the conversion factor or use the converter. 1 Acre = 43 560 Square Feet There are 43560 square feet in an acre, because an acre is defined as an area of 1 chain by 1 furlong (66 feet * 660 feet), that makes 66 ft * 660 ft = 43560 sq. feet in an acre.