What are effects of nicotine?

it causes decreased appetite, heightened mood, increased heart rate and blood pressure, nausea, diarrhea, better memory, and increased alertness.

Explanation:

it also contributes to the hardening of the arterial walls, which in turn, may lead to a heart attack

hope this helps

See below

Explanation:

Nicotine is a common stimulant that is found in e-cigarettes, cigarettes and vapes. This is a very toxic stimulant. Many people are addicted to this abusive substance because of the fact that it causes lower anxiety. But, this stimulant actually causes depression and makes your lungs unhealthy. More symptoms can be felt, like stomach pain and nausea.