Eco-types into healthy food (6)
I believe the answer is:
greens
'healthy food' is the definition.
(informal term for vegetables)
'eco-types' is the wordplay.
'eco' becomes 'green' (as in eco-friendly).
'types' becomes 's' (I can't explain this - if you can you should give a lot more credence to this answer).
'green'+'s'='GREENS'
'into' is the link.
Can you help me to learn more?
(Other definitions for greens that I've seen before include "Places for bowling" , "Money" , "Cabbage, sprouts etc" , "Vegetables and politicians of a certain hue" , "Putting areas" .)