why is nicotine is addictive?
Consuming nicotine—through regular cigarettes or vaping—leads to the release of the chemical dopamine in the human brain. As with many drugs, dopamine prompts or “teaches” the brain to repeat the same behavior (such as using tobacco) over and over.
how does nicotine increase blood-sugar levels?
insulin helps blood sugar enter cells, but nicotine changes cells so they don't respond to insulin, which increases blood sugar levels. Chemicals in cigarettes harm cells in your body and cause inflammation. This also makes cells stop responding to insulin.
how does nicotine reduce depression and anxiety?
Nicotine creates an immediate sense of relaxation so people smoke in the belief that it reduces stress and anxiety. This feeling of relaxation is temporary and soon gives way to withdrawal symptoms and increased cravings.
how does nicotine increase dopamine levels?
Nicotine that gets into your body through cigarettes activates structures normally present in your brain called receptors. When these receptors are activated, they release a brain chemical called dopamine, which makes you feel good. This pleasure response to dopamine is a big part of the nicotine addiction process.
(if this helped you pleas mark me as brainliest<3)
