No it is not a good idea to feed rats meal worms
(IME reptile owners and former reptile owners are behind this offensive behaviour)
Rats require low protein (10%) and it is best if their protein comes from plant sources
Research has found that animal protein causes cancer growth in rats (Edit: see the China Study)
Rats also do not needed added fats EDIT usually there is enough fats in their diet, but if they need good fats people give foods like avocado (they can not be given the parts near the skin or near the pit - see forbidden foods list)
With respect to diet info, people on the internet have vastly different ideas regarding diet.
Many of those ideas will cause illness or shorten the lives of pet rats.
It is a good idea to ask for the peer reviewed reference articles that support what someone is saying
I had a brief look at the link mentioned above and found that the site has quite a bit of bad info re diet, no idea how good the info is re vegs and fruit
Rats can have dried fruit, however dried fruit has a higher concentration of sugars so those that do feed dried fruit do only occasionally. Rats do, however, love a piece of ripe banana
There is info re diet in the Reference Thread, including the forbidden foods list accepted by the very large rat owners community prior to 2004, suggested supplements, the nutritional requirements of rats, the recommended diet for rats, and research based info regarding protein as reported in the China Study
My rats especially like: mixed greens, baby kale. broccoli, organic carrots (cooked and as thin raw pieces), cooked squash, cooked sweet potato, frozen/thawed peas, cooked organic corn on the cob (GMO corn is designed to kill rats), a couple of cooked chick peas, a couple of cooked kidney beans, cooked whole grains (such as cooked real organic oatmeal or 12 grain cereal with blueberries, cooked organic quinoa, cooked barley), organic pumpkin seeds as a treat, a piece of ripe banana, a piece of apple, blueberries, watermelon, a piece of cantaloupe, and organic kamut puffs (
https://www.naturespath.com/en-ca/products/natures-path-foods/kamut-puffs/) as a treat. They also like my homemade lentil & barley & vegetable soup. …………….. They will eat other things as well but these are their favorites.