The Sneaky Role of Sugar
The first thing to check after protein is the sugar content. It's not uncommon for a protein bar to contain as much sugar as a candy bar, completely undermining its health benefits. Look at the 'added sugars' line on the nutrition label; ideally, this
should be as low as possible, with some experts suggesting a limit of 5 grams per serving. Be wary of ingredients like high-fructose corn syrup, cane sugar, or various syrups listed near the top of the ingredients list. Remember, ingredients are listed by weight, so if sugar is one of the first few items, the bar is likely more of a dessert.
Don't Forget About Fibre
Fibre is a crucial component of a satisfying and healthy snack. It aids in digestion and helps you feel fuller for longer, preventing blood sugar spikes and crashes that can come from sugary, low-fibre foods. When you're choosing a bar, look for one that contains at least 3 to 5 grams of fibre. This fibre should ideally come from whole-food ingredients like nuts, seeds, oats, or fruits, which you'll see on the ingredient list. A good balance of protein and fibre makes for a much more effective and balanced snack.
Understanding Protein Sources
Not all protein is created equal. The protein in bars typically comes from a few common sources: whey, casein, and plant-based options like soy, pea, and rice. Whey and casein are milk-derived proteins popular for muscle repair and are considered complete proteins, meaning they contain all nine essential amino acids. Plant-based proteins are excellent for those with dairy sensitivities or following a vegan diet. Soy protein isolate is one of the most common but also one of the most processed forms. Many brands now use pea or brown rice protein. Some bars also get their protein from whole foods like nuts and seeds, which is a great sign. The best type often comes down to personal dietary needs and tolerance.
The Deal with Sugar Alcohols
To keep the sugar count low, many companies use sugar alcohols like sorbitol, maltitol, and erythritol. These sweeteners provide fewer calories than regular sugar and have a smaller impact on blood sugar. However, there's a trade-off. Because they aren't fully absorbed by the body, they can cause digestive issues like bloating, gas, and cramping, especially when consumed in large amounts. Maltitol, in particular, has a higher glycemic index than other sugar alcohols, partially negating the low-sugar benefit. If you have a sensitive stomach, you may want to avoid bars with high amounts of sugar alcohols.
Read the Entire Ingredient List
A good rule of thumb is to choose products with a short, recognisable ingredient list. If the list is long and full of chemical-sounding names, artificial sweeteners, and highly processed oils (like palm kernel oil), it might be best to put it back. Whole foods like nuts, seeds, and dried fruit should ideally be the primary ingredients. Marketing terms like 'clean' or 'natural' are not regulated, so the only way to know what you're eating is to ignore the front of the package and read the back carefully.
