* blood filter

i just thinking a bout we set an oil filter on our car engine for clean the oil.

if we set a " blood filter " in our body,
can we clean our blood form fat , sodium n calories?
so we can eat what we like to eat but getting  health n getting slim body.

eat what we like but don't need to worry become like this....

but like this.....:-) (jessica alba )

indeed, kidney is a blood filter of our human body. see

http://en.wikipedia.org/wiki/File:KidneyStructures_PioM.svg
but it's not enough to filter our blood form fat , sodium n calories else.
coz we waht to eat what we like.
so it must be set an " extra boold filter" for us.
then change the extra boold filter every 10,000 miles like our car....:-)
for save our kidney.