The glycemic index (GI) is one of our favorite tools to assess the suitability of a particular food for someone’s diet. This is most relevant for someone who is trying to control their blood glucose levels, which can encompass a variety of situations.
GI is a tool that can provide us with an estimated idea of how big of a glucose spike a food will produce, which then comes with an accompanying insulin spike that can harm long-term health. Fortunately, there are some common threads between low GI foods, and we’ve compiled shortlists of foods that fit into these categories so you can see them at a glance.
These are some of the best foods available to health-conscious people in general since they’re packed with nutrients and fiber. They also pull double duty as low glycemic index foods due to the lack of starch, which can help people struggling with weight control.
Grains are a staple food in many breakfasts, so it’s even more important to get this one right. How your energy loading is done in the morning will affect your energy levels for most of the day, which will have a knock-on effect for the foods you will later crave and eat. If you are someone who consumes grains, then you want to focus on a whole grain version. The less processed a grain is, in general, the longer it will take to digest and the longer you will feel full.
Of course, not everyone tolerates grains well, particularly those that contain gluten. If this applies to you, then some grains without gluten like quinoa and buckwheat may be the best options to consider.
Concentrated sweets are sugary products that are just about some of the least healthy foods you can find out there. Simple sugars like table sugar are absorbed rapidly into the blood from the gut, where they cause a sharp spike in blood glucose levels. This causes a spike in insulin levels, a hormone that transports glucose from the blood into cells. Repeatedly spiking insulin levels can lead to insulin resistance, associated with a variety of health problems. Although lower GI sweets are preferable to high GI sweets, both are basically a sugar bolus that will harm the body over time.
The key here is to stick to unprocessed proteins. Much like fruits and vegetables, the longer it takes to extract the nutrients from a protein source, the less extreme the spike in glucose. But in this context, we’re primarily concerned with added sugars in protein sources when they’ve been processed.
Healthy fats are an essential part of a balanced diet; it’s a crucial detail that eating fats don’t make you fat – and a surprising amount of people continue to believe this even to this day. Healthy fats help regulate blood glucose levels by making sources of glucose digest more slowly, releasing their sugar into the blood over a more extended period.
If you eat a smaller number of meals, but those meals contain whole foods, including vegetables, proteins, and some starches, it should keep you from needing to snack throughout the day. There’s a metabolic component here: combining starches with foods that are slower to digest will mean the sugar is released more slowly into the blood, as mentioned above. But there’s also a behavioral component; it’s simply easier to track the food you eat when it’s done less frequently, and you will be less prone to topping up energy levels as they start to dip, which can make you feel hungrier and lead to more frequent glucose spikes.
Eating protein and starch together will result in a lower glucose spike since the starchy food isn’t digested by itself. In other words, making it take longer to digest the starch is precisely why you should eat protein and starch together. If you’re eating a potato, for example, the effort of extracting the sugars from the potato when mixed with some chicken will mean that the resulting blood glucose spike is smaller and slower. The name of the game is avoiding blood sugar spikes.
GI is a valuable tool, but different people have different responses to the same foods. Other people also eat different quantities of food, while the GI is calculated with a defined serving of a single food. Continuous glucose monitors (CGM) let you see exactly how your body responds to foods with different GI values. CGMs have been used in diabetic populations for many years and from the first marketing have been considered very safe and effective by the FDA. NutriSense is proud to offer the same CGM technology for the first time for the public to use alongside their team of world-class Registered Dietitians. NutriSense CGMs come with an innovative app that lets you track your blood glucose levels, and every meal is different, after all. For example, a specific food’s effect on a person’s blood glucose levels will be changed by how it is prepared and what other foods are combined with it at the time of eating.
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