Madeleine Hull
The ketogenic diet is a very low-carb diet that can benefit people with type 2 diabetes by helping with blood sugar and medication management. Vegetables are considered a foundation of the keto diet, but not all veggies are created equal when it comes to keto. Root vegetables like potatoes, sweet potatoes, and carrots are among the least keto-friendly vegetables due to their high carb content. Instead, keto dieters should focus on eating leafy greens and other above-ground, non-starchy vegetables like broccoli, cauliflower, zucchini, avocado, asparagus, spinach, kale, and arugula. These vegetables are nutrient-dense and provide the body with essential vitamins, minerals, antioxidants, and fiber while keeping carb counts low.
| Characteristics | Values |
|---|---|
| Carbohydrates | 20-50 grams daily |
| Starchy vegetables to avoid | Peas, potatoes, corn, green peas, white potatoes |
| Non-starchy vegetables to eat | Leafy greens, peppers, broccoli, cauliflower, avocado, asparagus, zucchini, arugula, tomatoes, spinach, kale, Brussels sprouts, mushrooms |
| Root vegetables | Less keto-friendly due to higher carbs |
| Onions | Use sparingly as seasoning |
| Tomatoes | Higher carbs but can be consumed in moderation |
| Bell peppers | Higher carbs but can be consumed in moderation |
| Brussels sprouts | Higher carbs but can be consumed in moderation |
| Green beans | Higher carbs but can be consumed in moderation |
| Health benefits | Weight loss, improved heart health, reduced cognitive decline, lower risk of certain cancers and obesity |
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What You'll Learn
Leafy greens like spinach, kale, arugula, lettuce, and cabbage
Lettuce, for example, is packed with antioxidants, vitamins, minerals, and nutrients that offer numerous health benefits for people with diabetes. It is a healthy choice for a salad, providing vitamins A, C, K, and lutein, which promote eye health and reduce inflammation. Arugula, a member of the Brassicaceae family, is another peppery-tasting leafy green that contributes to bone health by providing calcium and vitamin K. It also offers fibre, which helps reduce insulin resistance and makes people feel fuller for longer, aiding in weight management.
Kale, a vegetable in the Brassicaceae family, has beneficial hypoglycemic effects, helping to suppress postprandial increases in plasma glucose levels. It is also a good source of vitamin C, contributing to its antioxidant properties, which may help lower the risk of diabetes complications such as cardiovascular disease and nerve damage. Spinach, another leafy green, is fibre-rich and low in carbohydrates, making it an excellent choice for blood sugar management and reducing the risk of diabetes-related complications.
Cabbage, a versatile vegetable, is also recommended for a diabetes-friendly diet. Red cabbage, in particular, provides vitamin C, contributing to its antioxidant properties, and vitamin K, which is important for bone health. Cabbage is also a good source of fibre, which is beneficial for digestive health and blood sugar management.
In addition to their diabetes-friendly properties, these leafy greens offer other health benefits. For example, they are rich in nutrients that promote heart health and may help reduce the risk of certain cancers. It is important to note that the way these vegetables are prepared can affect their nutritional value. Raw or lightly cooked vegetables tend to retain more of their nutrients, while boiling and frying can compromise their nutritional benefits.
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Low-carb veggies like broccoli, cauliflower, zucchini, and avocado
When it comes to managing type 2 diabetes, a keto diet can be a potential option, but it's important to consult a healthcare professional first. Low-carb vegetables are an essential part of the keto diet, and some great options include broccoli, cauliflower, zucchini (courgette), and avocado.
Broccoli is a non-starchy vegetable with a low net carb content, making it a suitable choice for keto dieters. It is also a good source of fiber, which is important to include when following a keto diet to prevent constipation.
Cauliflower is another excellent low-carb substitute, especially when used as a rice alternative. It has a positive impact on blood sugar management, which is beneficial for those with type 2 diabetes.
Zucchini, a type of summer squash, is a versatile vegetable that can be incorporated into a variety of dishes. It is low in calories and carbohydrates, making it a safe option for those concerned about glucose levels. Zucchini can be sliced, grated, or spiralized to create zucchini noodles, a popular substitute for pasta or rice in keto-friendly meals.
Avocados are a nutritious addition to a keto diet, offering healthy fats and fiber. Regular avocado consumption has been linked to improved heart health and reduced levels of "bad" cholesterol.
In summary, these low-carb veggies—broccoli, cauliflower, zucchini, and avocado—are not only keto-friendly but also provide various health benefits that can support individuals with type 2 diabetes in managing their blood sugar levels and overall health.
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Peppers—jalapeños, bell peppers, and poblanos
Jalapeños are low in carbohydrates and can be added to keto meals to introduce heat and flavour. They can be used in keto barbeques, salads, or as a side to your favourite proteins. Jalapeños can also be pickled, which increases their shelf life and makes them a convenient pantry staple.
Bell peppers are also keto-friendly, with only 2–3 net carbs per 100g serving, depending on the colour. Green bell peppers have the lowest carb content, with 2.9g net carbs per 100g, while red and yellow bell peppers have slightly higher carb counts, with 3.9g and 3.93g net carbs per 100g, respectively. Bell peppers are versatile and can be sautéed, roasted, or stuffed with keto-friendly ingredients. They are a good source of vitamins A and C and have anti-inflammatory, antidiabetic, and antimicrobial properties.
Poblanos are another type of pepper that can be included in a keto diet. They are minimally processed and free of harmful ingredients like non-keto sweeteners, highly refined oils, and food additives. While poblanos are low in fat, they can be combined with healthy fat sources such as virgin olive oil, grass-fed butter, and MCT oil to make them more keto-friendly.
In general, peppers are a good choice for a ketogenic diet as they are low in carbohydrates and can be used in a variety of dishes to add flavour and texture. They are also a source of important nutrients, making them a healthy and tasty addition to keto meals.
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Root vegetables to avoid—sweet potatoes, potatoes, and parsnips
The keto diet is a very low-carb diet that is not suitable for everyone. It is especially important to exercise caution when following this diet if you have type 2 diabetes. Root vegetables, in particular, sweet potatoes, potatoes, and parsnips, are high in fiber and carbohydrates, which goes against the main principle of keto.
Sweet potatoes, while packed with vitamins, minerals, and fiber, are a starchy vegetable with a high carbohydrate content. A medium-sized sweet potato contains about 20 grams of carbohydrates. On the other hand, a similar-sized serving of french fries has 36.5 grams of carbohydrates. Thus, sweet potatoes are considered keto deal-breakers due to their high carb content.
Potatoes are another root vegetable that is not keto-friendly, especially for individuals with diabetes. Potatoes are high in carbohydrates, which can spike blood sugar levels as the carbs are broken down into sugars and enter the bloodstream. In people with diabetes, the sugar is not cleared properly, leading to higher blood sugar levels and potential health complications. An average small potato contains about 30 grams of carbs, while a large potato can have up to 65 grams. Therefore, potatoes should be avoided on the keto diet, especially for those managing diabetes.
Parsnips are also root vegetables that are high in carbohydrates. A 2.8-ounce (80-gram) serving of parsnips has less than 10 grams of carbs, but a 100-gram serving has 13 grams of net carbs and 17 grams of total carbs. Thus, parsnips are another root vegetable that should be avoided on the keto diet to maintain the very low-carb nature of the diet.
While it is possible to incorporate small portions of some lower-carb root vegetables, such as carrots, onions, and beets, into a keto diet, sweet potatoes, potatoes, and parsnips contain enough carbohydrates to be avoided. It is important to consult a healthcare professional or a registered dietitian before making any dietary changes, especially if you have a chronic health condition like type 2 diabetes.
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Starchy vegetables to limit—peas, corn, and green peas
The ketogenic diet is a very low-carb diet with numerous health benefits. It is important to follow the keto diet under the supervision of a registered dietitian to ensure you're getting all your essential nutrients. If you have diabetes or follow a low-carb diet, you may want to limit your intake of starchy vegetables. That's because they contain a similar number of carbs as bread, rice and cereals.
Starchy vegetables include peas, corn, and green peas. These vegetables are particularly high in resistant starch, a type of complex carbohydrate. While starchy vegetables can be part of a healthy diet, providing nutrients, vitamins, minerals, fiber, and antioxidants, they may not be suitable for a keto diet, especially for those with diabetes.
Peas, corn, and green peas are considered starchy vegetables and should be limited on a keto diet, especially for those with type 2 diabetes. These vegetables contain higher amounts of starch, which is a type of carbohydrate. Carbohydrates are the body's preferred energy source, but the keto diet aims to get the body into ketosis, burning fat as fuel instead of carbs.
While peas, corn, and green peas offer nutritional benefits, they are higher in carbs and can cause blood glucose spikes, especially for those with diabetes. For this reason, it is recommended to limit these starchy vegetables and opt for non-starchy alternatives when following a keto diet with type 2 diabetes. Non-starchy vegetables, such as leafy greens, are crucial to a keto diet as they are low in calories and provide essential nutrients.
However, it is important to note that not everyone with type 2 diabetes needs to strictly count carbs or avoid starchy vegetables altogether. The diabetes plate method suggests that starchy vegetables should make up around 25% of your plate, with non-starchy vegetables comprising 50%. Consulting a healthcare professional is advised before making any dietary changes.
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Frequently asked questions
It is recommended to consult a healthcare provider or a registered dietitian before making any dietary changes. Generally, the keto diet is a very low-carb diet that restricts your carbohydrate intake to about 20-50 grams daily. Vegetables with less than 5 grams of net carbs may be eaten freely. These include spinach, zucchini, lettuce, cucumbers, cabbage, asparagus, kale, cauliflower, avocado, broccoli, arugula, and bell peppers.
Root vegetables and starchy vegetables like potatoes, peas, and corn tend to be higher in carbs and should be limited or avoided. Onions, especially when caramelized, grilled, or sautéed, should also be consumed in moderation.
It is important to monitor your blood sugar and medication management under the supervision of a healthcare professional. The keto diet may also lead to nutrient deficiencies, so ensure you are getting all your essential nutrients. Focus on eating leafy salad greens and other non-starchy vegetables, which provide the body with the most antioxidant protection and fiber while being low in carbs.
