Semolina bread is yellow, not white, but I would class it along with white bread since it has low fiber content, but I hear whole (higher fiber) flours can be bought.
The nutritional facts per 100g of fine semolina flour are 340 calories; 12.5 grans protein; 67g carbohydrates (of sugar 3.5)(fiber 4g)(Rest (59.5) is starch) and 2.5 grams of fat.
It's made from wheat, as it says above, and is not gluten free, although some people who are allergic wheat can handle it.
In my opinion, it's healthier than wheat flour due to the effects on the body's metabolism, skin and digestion.
Benefits of semolina: High protein and low fat; digested slowly so makes you fuller for longer; has high potassium content so improves kidney function; high in vitamin B and E groups. Hope this helps.