does dipping tobacco cause high blood pressure The Many Dangers of Use Smoking and High Blood Pressure:

These reduce the amount of nicotine in the brain so that the smoker does not experience the negative effects of a sudden drop in nicotine levels. ~ National Institute of Drug Abuse (Source) For those who are adamant about kicking their tobacco habit, there are plenty of options

Make an appointment with your doctor as soon as you have any concerns so you can be tested and treated as soon as possible.

The idea behind them is that they constantly deliver a small supply of nicotine throughout the day, with the idea that they take the edge off cravings enough to make it possible to get through the day without smoking

Will it be to walk past as if nothing happened or you'll be surprised at him smoking