The lungs is your answer :)
An increased number of WBCs seen in the urine under a microscope and/or positive test for leukocyte esterase may indicate an infection or inflammation somewhere in the urinary tract. If also seen with bacteria (see below), they indicate a likely urinary tract infectionTypes of WBCs. The different types of white blood cells (leukocytes) include neutrophils, basophils, eosinophils, lymphocytes, monocytes, and macrophages.White blood cells help all parts of the body fight infection. ... The following can also cause raised levels of leukocytes in the urine: some cancers, such as prostate, bladder, or kidney cancer.^-^
Hoped I Helped Honey Have A Nice Day ¨Peace¨
Yes, there is a variety of things you can do to wear down the enamel. A few of the biggest things are: Drinking Coffee or soda, eating acidic foods and not brushing your teeth. Sadly you are not able to grow back your enamel after if it fully gone so it's best to protect your enamel as much as possible.
The cardiovascular system is your heart and blood vessels. If it stopped working, that would affect your whole body
You don't need to lose weight if you're health isn't at risk and you are happy!