Possible side effects from ‘fasting days’ include hunger, low energy levels, light-headedness and poor mental functioning. You still need to make healthy food choices on ‘non-fasting’ days. There has been little research about the long-term effect of intermittent fasting on a person’s weight or health although one study suggest that intermittent fasting can contribute to anxiety.

Recommendation

If you are the sort of person who likes to follow rules and a set routine then Intermittent Fasting or calorie counting may be for you.