18-month-old won't eat ANY new foods

My 18-month-old refuses to eat any new foods at all, and has begun to refuse foods that she previously would eat.  My question basically is whether or not we should be concerned about long-term consequences of her eating habits.  The following is a list of foods that she will eat:  Heinz pablum (trying to make sure she gets some iron), toddler biscuits, arrowroots, crackers, bread/toast, Cheerios (dry only), whole wheat rice cakes (will eat rarely), applesauce, jarred pasta or paella (Stage 3 baby food).  She will drink whole milk, apple juice and water.  She will eat NOTHING else.

We have continued to just re-introduce new foods to her, and have tried not to make power struggles out of trying new foods (so that it won't become an averse experience).  We have also tried putting "our foot down" and giving her only "bigger people" food, and if she won't eat it, then she goes hungry (logic being if she gets hungry enough she will try new foods).  The result was that she didn't eat anything for several days (other than drinking milk and a couple of toddler biscuits or crackers at snack time).

Any help you can offer would be greatly appreciated.

[nastasc]

My hubby is on a warfarin medication for a blood cloth discovered in his right leg. He has hard time stabilizing the dosage. Almost dayly he has a blood vesel in his eye which pups and when urinating at the end sometimes has a little blood.
I do not think warfarin is a good solution for him if on a long term basis. We are looking to a natural alternative. Any suggestions for us to research?