Chewing tobacco has a long-term effect on a person's health.

The given statement is true.

The habit of chewing tobacco has long term effects on a person's health. Tobacco contains nicotine which is a harmful substance. It can alter heart rate and palpitaion and  also alleviate blood pressure by affecting the arteries.

Tobacco contains many carcinogenic chemicals too. People addicted to tobacco chewing can develop precancers and cancers of the mouth, throat, esophagus, and pancreas.