Please give me letter

1.  On behalf of your father write a letter to your elder brother who is greatly fond of eating too much of fast foods and chocolates and drink sugary drinks. You may take help of the following clues :

Clues :  health problems - bad habit - fear of getting obese - other adverse effects on health - wastage of money - spoiling health - health once lost, cannot be recovered - request to avoid fast foods and sugary drinks - take care of health