Who has reduced immunity?

Peoples with :-

1) More obese body (अतिस्थुल) 

2) More emaciated body (अतिकृश) 

3) Having loose muscle, abnormal blood and bone tissues(अन्यनिविष्टमांसशोणितास्थीनि) 

4) Weak( दुर्बल)

5) Nourished with unhealthy food ( असात्म्याहारोपचिता)

6) The intake of  less quantity food regularly (अल्पाहार) 

7) Having feeble mind (अल्पसत्व)

Ref - Charak Samhita Sutrasthana 28/7