Protein bars are a great alternative if you don't have time to cook or sit down for a meal, but you must read the labels for the nutritional facts. Many companies call their products protein bars because they contain whey protein isolate, whey protein concentrate, or other types of protein in them, but what are the other nutritional facts? How much sugar does protein bar A have compared to protein bar B? If a protein bar contains 20-30 grams of sugar and 20 grams of protein and 10 grams of fat is that really a healthy choice for you? Probably not. Some protein bars on the market are not much better for you than candy bars and the only real notable difference is that the protein bar in question probably contains more protein.
Quest Nutrition Protein Bars look to have a great product. With only 5-6 grams of non-fibre carbs from nuts and not sugar, approximately 5-6 grams of fat, and 20 grams of protein, and taste great, Quest Protein bars have a great product that is truly a good source of protein, healthy fats, and fibre that can easily be considered to be a healthy choice even during a weight loss regimen.
See the image below for an example of Quest Nutrition's protein bars nutritional facts: