It is important to eat a balanced diet and include variety of foods from different food groups. Not eating starches, milk and other dairy products will give you short term result of loss weight but in long run deprive your body of other vital nutrients like proteins. Fruits and vegetables can give you enough sugar, vitamins and minerals but are a poor source of proteins. I would suggest you to eat a balanced diet with cereal and grains, fruits, vegetables, milk, small amount of fat and non-veg if you were a non-vegetarian. Eating in moderation but balanced will help you in long term.