Dear Prashant,
I guess it depends on your definition of intelligence and intellect. Does it help you get higher IQ scores, I don't think so, but I think it definitely helps with clarity of mind. I can only speak from personal experience but I do feel reiki aids me in more than just a physical way. I have recently finished my reiki 2 and have been doing self treatment for the past three weeks on a daily basis. I have definitely noticed that I am able to be present in the moment a lot more. I have a lot more mental clarity and am more emotionally balanced. When you are balanced and more confident in yourself, I think one just naturally feels more intelligent. I feel I am able to convey my thoughts better to others and stand up for my opinions much more.
Not sure if this was the answer you were looking for. I'd love to hear if it has helped you feel more intelligent though.
Many blessings,
Cassandra