7 'Healthy' Foods That Secretly Spike Your Blood Sugar

Many foods often seen as healthy can cause unexpected spikes in blood sugar levels. A new review highlights seven common items that may raise glucose more than people realise. These include plant-based milks, protein bars and even sushi.

The findings suggest that careful label reading is essential, even for products marketed as nutritious. Nutritionists advise choosing options with less than 10 grams of glucose per serving to avoid sharp increases in blood sugar.

Plant-based milks, particularly oat and rice varieties, contain natural or added sugars that push up glucose levels. While often viewed as a healthier alternative to dairy, these drinks can still impact blood sugar significantly.

Protein bars, despite their reputation for being a balanced snack, frequently cause spikes due to hidden sugars and low protein content. Many brands pack in sweeteners while lacking enough fibre or healthy fats to slow glucose absorption.

Oatmeal, though high in fibre, can still raise blood sugar more than expected. Nutritionists recommend choosing unsweetened, high-fibre versions to reduce this effect. Even without added sugar, the natural carbs in oats can lead to a noticeable increase.

Sushi, often considered a light and healthy meal, can also trigger blood sugar spikes. The combination of white rice and sugary sauces contributes to a higher glycemic impact than many assume.

Sauces and dressings with high carb counts—such as barbecue sauce or sweet salad dressings—can contain surprising amounts of sugar. These additions turn otherwise balanced meals into glucose-raising risks.

Smoothies and protein shakes made with multiple carb-based ingredients or sweetened powders often deliver a concentrated dose of sugar. Blending fruits and sweetened yoghurts can create a drink with a glycemic impact similar to a sugary dessert.

Rice cakes, despite being low in calories, have a high glycemic index. Their refined carbs cause blood glucose to rise rapidly, making them a less ideal snack for steady energy levels.

The review underscores the importance of checking labels for total sugar and added sweeteners. Many foods perceived as healthy can still lead to blood sugar spikes if not chosen carefully. Opting for low-glycemic alternatives and monitoring portion sizes can help maintain more stable glucose levels. Nutritionists continue to recommend foods with less than 10 grams of glucose per serving for better metabolic control.