Tobacco causes about 40,000 deaths in Spain every year and leads to illnesses like cancer and heart attacks. It is forbidden to smoke in schools, hospitals, and other enclosed public spaces due to the harm it causes smokers and those exposed to secondhand smoke. Alcohol limits brain functions and damages the nervous system. Cannabis use can cause memory and concentration problems as well as reduced coordination. Obesity, defined as excessive fat accumulation, affects over 1.6 billion people worldwide according to WHO estimates. By 2015, over 700 million adults are projected to have obesity due to factors like increased calorie intake and more sedentary lifestyles. Obesity increases the risk of illnesses such as heart disease, diabetes, and some cancers