Switch to Swedish snus. It is like dip in a mini-tea bag and has a fraction of the carcinogens. Dip still contains polonium-210 and nitrosamines in significant quantities. You will get a mutated patch of discoloured gums before the cancer where the DNA has been damaged. Nicotine raises blood pressure and reduces circulation a bit, mainly problems in old age.
Your nutrients are not absorbed as much because it makes you shit. People have trouble understanding this, it just makes you shit your food out faster so less is absorbed, there is nothing more complicated than that.