4 groups of people who should limit their consumption of baked sweet potatoes to protect their health.

Although boiled or steamed sweet potatoes have a low glycemic index, baking at high temperatures (usually above 200°C) alters their nutritional structure. This process causes starch hydrolysis, rapidly converting complex carbohydrates into simple sugars (maltose).

Studies show that the glycemic index (GI) of baked sweet potatoes can reach 94 – a level equivalent to consuming white bread or refined sugar, easily leading to fat accumulation and causing blood sugar spikes. Therefore, people with type 2 diabetes should limit their consumption and consult with their doctor or nutritionist to incorporate this food into their diet safely.

2. People with kidney and liver problems should limit their consumption of baked sweet potatoes.

100g of baked sweet potatoes provide up to 475mg of potassium. When consumed in excessive amounts, the rapid increase in potassium levels in the body can increase the risk of hyperkalemia (potassium toxicity), which can lead to heart attacks.

In addition, sweet potatoes also contain high levels of oxalates , which can accumulate to form calcium oxalate kidney stones and gallstones. For people who already have liver and kidney problems or conditions, eating a lot of baked sweet potatoes can overload these organs, further damaging them.

3. People with poor digestion, or those experiencing stomach pain or diarrhea.

Sweet potatoes contain mannitol, a type of sugar alcohol that has poor water absorption in the intestines. For people with stomach pain, poor digestion, or irritable bowel syndrome, mannitol can cause side effects such as bloating, stomach discomfort, and worsen diarrhea.

4. People with allergies

Sweet potatoes contain a small amount of solanine. Although extremely rare, this substance can still cause allergic reactions in sensitive individuals, leading to symptoms such as sneezing, coughing, hives, itchy skin, difficulty breathing, and swelling of the mouth, lips, or tongue.

The scientific journal Food Research International and the European Food Safety Authority (EFSA) have issued warnings: When sweet potatoes are processed at high temperatures, such as baking, a strong Maillard reaction occurs. While this reaction contributes to a delicious flavor and attractive color, it inadvertently produces acrylamide (a potentially carcinogenic substance) and AGEs (Advanced Glycation End-products) – factors that accelerate aging.

5. Some general notes when eating baked sweet potatoes

To avoid unwanted reactions, healthy individuals should also be aware of the following points when eating baked sweet potatoes:

Moderate consumption: Sweet potatoes are rich in beta-carotene (a precursor of vitamin A). If consumed excessively and continuously, the excess vitamin A can accumulate in the liver, potentially leading to vitamin A toxicity, manifested by symptoms such as rashes and headaches. It's best to eat baked sweet potatoes in moderation, alternating with other foods to balance nutrition and ensure good health.

Prioritize whole foods: Besides the usual baking method, many people have a habit of adding butter, scallion oil, or honey and sugar when baking sweet potatoes to enhance the flavor. However, this habit will increase the amount of saturated fat and empty calories consumed, negating the weight-loss benefits of sweet potatoes.

For those trying to control their blood sugar or weight, adding these sweet and fatty seasonings will cause the glycemic index of the dish to rise rapidly, putting strain on the digestive system and increasing the risk of accumulating excess fat.