Parliament cites flawed study of good and bad regimes (9)
I believe the answer is:
dietetics
'study of good and bad regimes' is the definition.
I can't tell whether this defines the answer.
'parliament cites flawed' is the wordplay.
'parliament' becomes 'diet' (diet can mean a parliament in some countries).
'flawed' indicates an anagram (I've seen this in other clues).
'cites' with letters rearranged gives 'etics'.
'diet'+'etics'='DIETETICS'
Can you help me to learn more?
(Other definitions for dietetics that I've seen before include "Study of nutrition" , "food intake study" .)