Awfully frail, he hates some of those practising alternative medicine (5,7)

I believe the answer is:

faith healers

'some of those practising alternative medicine' is the definition.

'awfully frail he hates' is the wordplay.
'awfully' is an anagram indicator.
'frail'+'he'+'hates'='frailhehates'
'frailhehates' with letters rearranged gives 'FAITH HEALERS'.

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.