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Why are many cigarettes out of stock now?

Reason:

In order to meet the increasing consumption power of smokers and increase the supply of relatively high-priced products from the supply side, the reason in the industry is that under the premise of a slight increase in total cigarette sales, in order to achieve the task of improving profits and taxes, the supply of high-priced products can only be increased and the supply of low-priced products can be reduced.

The influence of tobacco on the brain;

Nicotine diffuses to the whole body through lung mucosa and oral mucosa. After nicotine enters the brain, it can mimic the role of acetylcholine, a central neurotransmitter, and bind to nicotine receptors on the surface of many neurons. Nicotine can stimulate the central nervous system, especially in the reward circuit.

It can release more dopamine by activating related nerves. The harmine and norepinephrine contained in tobacco can keep dopamine, serotonin and norepinephrine in synapses at a high level by inhibiting the activity of catabolic enzymes.