I'd rarely accept someone's word when presented. People change so much and consume such varying things, it'd be impossible to rely on someone's word here.
A good place to start is pubmed. I did a search for studies related to MCTs and did not turn up anything conclusive. In fact, the studies themselves state that use of MCTs is inconclusive. You could try your own search, you might find something a little more solid on the subject. www.ncbi.nlm.nih.gov/pubmed