I have been on a diet for a month now and have lost 6Lbs. Ive managed to cut out alcohol and refined carbs. Whilst I am pleased about this something strange has happened. For the last week Ive had a horribly low mood. Its not like being sad. I feel really depressed and lethargic. Nothing else has changed in my life. Can restricting ones diet affect mood in this way? Has anyone else had a similar experience?