What factors causing disturbances in the functioning of the nervous system can be controlled by a person?

What factors causing disturbances in the functioning of the nervous system can be controlled by a person? What conclusions should each person draw?

Practically all factors that cause disturbances in the functioning of the nervous system can be controlled by a person. These include alcohol, drugs, poisons, negative emotions.
Each person needs to prevent damage to the nervous system, since it controls the work of all internal organs and is very important.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.