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.
The answer is 43560. We assume you are converting between square foot and acre. You can view more details on each measurement unit: sq ft or acre. The SI derived unit for area is the square meter. 1 square meter is equal to 10.7639104167 sq ft, or 0.000247105381467 acre.