There is not a treatment in the world that matches the healing power of laughter. I have seen many a patients getting well after serious diseases just by keeping their moods fresh and happy.
Not even this many researches has been done on this project of laughter as a medicine and all have been positively inclined towards laughter as being the best medicine. This is one of the reasons why you would have seen many practitioners recommending laughter as a medicine to all the people especially to those who are old and those who are fighting with depression as a disease.
A ten minute laughter treatment in the morning and an equal treatment in the evening have the power to cure the patients within a year of its start.