Smoking is one of the most serious problems the world has been struggling with. According to World Health Organisation (WHO), the tobacco epidemic is one of the biggest public health threats the world has faced, and it kills more than 7 million people a year. Affecting both the person who smokes and the people around him, being exposed to second hand smoke can also lead to oral and lung cancer.

The repercussions of smoking are plenty and each is more alarming as the other. On World No Tobacco Day, we list out the five disgusting things that happen to your body when you smoke.

The nicotine hits your brain in no time, making you irritable and anxious

With the first puff one takes, the nicotine — the chemical that makes smoking so addictive — is absorbed by the body. Within approximately 10 seconds its hits the brain, and according to the National Institute of Drug Abuse, it activates reward pathways. Nicotine increases levels of dopamine, causing temporary pleasurable effects. However, the effect dissipates equally and making one irritable, anxious and long for the next fix.