17-percent had levels so low they were deficient. Early symptoms of deficiency include reduced sensation in the limbs and memory and balance problems. You can correct this by taking a regular multivitamin or eating fortified breakfast cereal. Researchers found smokers are inhaling up to 8-times as much more tar and nicotine than what the label says. That's because many manufacturers use sucking machines to measure how much tar and nicotine is inhaled instead of people.
Smokers tend to take larger drags on cigarettes than machines.
Also, many low nicotine brands have filters to send smoke out of cigarettes and away from the smoker, but smokers cover up the filter holes with their fingers when they smoke. This web site is best viewed with a resolution of 800 X 600 or higher.