He was a very smart man that helped the world in the field of psychology
        
             
        
        
        
Answer: Dietary supplements can be used to improve physical performance during exercise, build muscle, change body composition and delay fatigue. If used unwisely, however, they can adversely affect overall health. Dosage is one key concern that should be taken into account with supplement use.
Explanation:
 
        
             
        
        
        
Some health benefits is that it reduces health risks, it can help improve your mood and it helps control your weight
        
                    
             
        
        
        
Answer:
i) Emphysema
ii) Chronic bronchitis
iii) COPD ( Chronic obstructive pulmonary disease) 
Explanation:
They all above given diseases cause permanent damage to lungs. Smoking is a major factor causing these diseases.