Tobacco causes about 40,000 deaths per year in Spain. It leads to illnesses like lung cancer, coughs, and heart attacks. Tobacco also damages non-smokers through secondhand smoke. Smoking is prohibited in schools, hospitals, and other enclosed public spaces according to law. Alcohol is the most consumed toxic substance in society. It limits brain functions and slows the nervous system. Alcohol causes memory loss, heart disease, and other issues. Cannabis includes marijuana and hashish. When smoked, it is quickly absorbed into the lungs and brain. Using cannabis may cause problems with concentration, coordination, and hormone levels. Obesity is defined as excessive fat accumulation that can