Immune system diseases (If you have kidney disease due to lupus, your doctor will call it lupus nephritis.) Long-lasting viral illnesses, such as HIV/AIDS, hepatitis B, and hepatitis C. Pyelonephritis, a urinary tract infections within the kidneys, which can result in scarring as the infection heals.
By Dr Ananya Mandal, MD. Nicotine has strong mood altering effects and can act on the brain as both a stimulant and a relaxant. Once within the bloodstream, nicotine may circulate around the body until it reaches the brain.
The short answer is NICOTINE--the chemical that causes you to become addicted to cigarettes. Nicotine affects your brain, changes your mood, and causes you to want more and more. When you smoke, your body immediately responds to the nicotine, but this high only lasts about 10 seconds!!Because it is so addictive, nicotine also causes unpleasant withdrawal side effects when you try to quit.HOWEVER, most of these symptoms will not last long and they should all be gone within a few weeks.hen you smoke, your body immediately responds to the nicotine, but this high only lasts about 10 seconds!! Because it is so addictive, nicotine also causes unpleasant withdrawal side effects when you try to quit.