Some people have low-level difficutly digesting wheat products (due to the gluten).
The symptoms may be minor, but changing to a gluten-free diet is an improvement for them.
Changing to rice instead of wheat products is a usual way to supply carbs in the diet.
Potato, beans, and corn are also common.
For cooking rice, the micro-wave is great - they usually have a 'rice setting'.
Be sure to use a large bowel, and you will have to do minor tinkering with the amount of water:rice to get best results.
Using 'instant rice' is not necessary, and spend a little more on the regular rice instead of the 'cheap stuff' - it does taste better.
A supermarket here carries a line of 'rice pasta' (brand is a Japanese name) that has an acceptable pasta texture and taste.
Look for the 'gluten-free' section in the store.
There is a serious gluten intolerance condition caledd celiac disease, for info about that see -
http://gluten-intolerance-symptoms.com/
Jay Kosta
Endwell NY USA