Tobacco causes about 40,000 deaths per year in Spain and can lead to illnesses like lung cancer, heart attacks, and coughing. It also harms non-smokers through secondhand smoke. Laws protect non-smokers by prohibiting smoking in schools, hospitals, and other enclosed public spaces. Alcohol limits brain and nervous system functions and can cause memory loss and heart disease. Drugs like cannabis are absorbed quickly into the lungs and brain and may cause problems with concentration, memory, and coordination. Obesity is defined as excessive fat accumulation and is harmful to health. By 2015, over 700 million people are estimated to have obesity worldwide due to nutritional imbalances and sedentary lifestyles. Obesity increases