Psychiatrist needs time for weight loss (9)
I believe the answer is:
shrinkage
'weight loss' is the definition.
'shrinkage' can be an answer for 'loss' (something reducing or shrinking). I am not certain of the 'weight' bit.
'psychiatrist needs time for' is the wordplay.
'psychiatrist' becomes 'shrink' (informal term for a psychiatrist).
'needs' means one lot of letters go next to another.
'time for' becomes 'age' (I've seen this in other clues).
'shrink'+'age'='SHRINKAGE'
Can you help me to learn more?
(Other definitions for shrinkage that I've seen before include "Reduction in volume" , "Process by which something becomes smaller" , "waste allowance" , "Process of becoming smaller" , "Contraction" .)