However, when you want to compare a Boolean variable with the literal Boolean value true or false, it is not necessary to do an explicit comparison, because the result of evaluating a Boolean value is that Boolean value. For example, the expressions
The nicotine in cigarette smoke is a big part of the problem. It raises your blood pressure and heart rate, narrows your arteries and hardens their walls, and makes your blood more likely to clot. It stresses your heart and sets you up for a heart attack or stroke. Know Your Blood Pressure Numbers.
Expert: Dr. D. Love replied 3 years ago. No, the saline nasal sprays do not include sufficient sodium to affect blood pressure. Even larger amounts of salt water, such as with nasal irrigation with a NetiPot do not affect blood pressure, because the vast majority of the salt flows back out of the body. Actually, the oral decongestants are more likely to affect blood pressure.