How do humans affect sugar gliders?

Sugar Gliders eat sap from acacias and eucalypts as well as insects, which means they are classed as omnivores.

Yes. They can eat a wide variety of stuff including: fruits, vegetables, protein, and breads and cereals. Their diet should consist of 20% - 30% fruits (some sources say only 5%), 40% vegetables (they tend not to like bananas and citrus fruits can cause diarrhea, canned fruits have too much sugar, frozen vegetables are ok), 25% to 50% protein (such as monkey chow, tofu, cooked turkey or chicken, hardboiled eggs, baby chicks or mice, and insects), and 15% breads and cereals (not too sugary or high in fat). Gliders are high-energy creatures and need lots of carbohydrates which breads and cereals can provide. You can occasionally give them them small pieces of wheat bread, shredded wheat squares (the kind with the raisin in the middle) or other HEALTHY cereals. Try experimenting with new foods, and make sure to rotate favorites to keep gliders from losing interest.