Side Effects of Honey

Updated on - 03 Feb 2026

Honey is often seen as a healthy, natural alternative to sugar. You might add it to your tea, spread it on toast or use it to soothe a sore throat. But even something as natural as honey can have side effects if you overdo it or have certain health conditions. From allergies to blood sugar spikes, it’s good to know how much is too much.

Let’s explore the possible downsides and how to use honey safely.

What are the side effects of honey?

Honey is considered generally safe for consumption. However, excessive intake or underlying health issues can cause adverse effects. Some side effects of honey that you should be aware of include:

• Digestive issues: People with irritable bowel syndrome (IBS) or fructose intolerance may experience discomfort after consuming honey. For some, honey may cause bloating, cramps or diarrhoea due to its high fructose content.
• May cause weight gain: Weight gain is also a side effect of honey that you should be aware of. Although it is a natural sweetener, honey is high in calories and sugars. Excessive consumption may lead to weight gain.
• Risk of infant botulism: Infants under the age of one should not be given honey, as it may contain Clostridium botulinum spores. Due to their underdeveloped digestive systems, infants are unable to process these spores, increasing the risk of infant botulism. This rare but serious condition can cause muscle weakness and respiratory issues.

Other symptoms of botulism include constipation, lethargy and difficulties in feeding.

Possible allergic reactions to honey

While honey is a naturally occurring substance, it can trigger allergic reactions in sensitive individuals. These reactions are usually caused by pollen, bee venom or other related proteins that make their way into raw, unfiltered honey during the collection process.

For mild allergies, you might notice symptoms such as itching, a runny nose, watery eyes or a slight skin rash. In more serious cases, honey can cause swelling of the lips or tongue, dizziness, nausea or breathing difficulty.

Though rare, some individuals may experience a severe allergic reaction known as anaphylaxis, which requires immediate medical attention. If you’ve ever had an allergic reaction to bee stings or pollen, it’s best to be cautious with raw honey and consult a doctor before including it in your diet.

Impact of honey on blood sugar levels

Honey may seem like a healthier alternative to sugar, but it still affects blood sugar levels. Since it contains natural sugars like glucose and fructose, it can quickly raise blood glucose when consumed in excess.

Although honey has a slightly lower glycaemic index than table sugar, the difference is not significant enough for people with diabetes to consume it freely. Regular intake can still cause blood sugar spikes and affect long-term glucose control. If you have diabetes, use honey sparingly and monitor your blood sugar levels regularly.

Honey and infant botulism risk

Honey is unsafe for babies under one year old because it can contain Clostridium botulinum spores. A baby’s immature digestive system cannot prevent these spores from growing, which can lead to infant botulism.

Symptoms include constipation, a weak cry, poor feeding, droopy eyelids, muscle weakness and breathing difficulties. Adults and older children are not at risk, as their digestive systems can stop the spores from multiplying.

For infants under 12 months, it is safest to completely avoid honey in any form.

Digestive issues caused by excess honey consumption

Eating too much honey can upset your stomach because it contains more fructose than glucose. When the body can’t fully absorb the excess fructose, it may cause bloating, gas, cramps or diarrhoea. Some people also experience a mild laxative effect after consuming large amounts.

Those with fructose intolerance or irritable bowel syndrome (IBS) are more likely to face these issues, but even healthy adults can feel discomfort if they overindulge.

If you notice digestive problems after eating honey, try reducing your intake or follow a low-FODMAP diet to identify if honey is the cause.

Who should avoid eating honey?

Honey isn’t suitable for everyone and should be avoided or limited by certain groups. Infants under one year should not consume honey, as it can contain Clostridium botulinum spores that cause infant botulism.

People with diabetes should be cautious, as honey can raise blood sugar levels. Those with pollen or bee allergies may experience allergic reactions, especially from raw or unfiltered honey.

Individuals with fructose intolerance or IBS may face bloating, cramps or diarrhoea due to its fructose content. People watching their calorie intake should also limit honey, as it is calorie-dense and may contribute to weight gain if consumed in large amounts.

Natural v. processed honey: Which is safer?

While both types of honey offer sweetness and some nutrients, they differ in nutrition and potential side effects. Here’s a quick comparison:

When to see a doctor for honey-related reactions

Most people do not experience adverse reactions to honey, but certain situations require medical attention. If you develop allergic symptoms such as rashes or shortness of breath, consult a healthcare professional immediately before the reaction worsens.

If eating honey causes repeated digestive distress, visit a clinic or hospital for tests and treatment, as early diagnosis helps manage gastrointestinal issues. If a baby under one year accidentally consumes honey, seek immediate advice from a paediatrician.

Conclusion

Honey is proof that even natural foods can have side effects when not used mindfully. The key is to enjoy it in moderation and pay attention to how your body responds. If something feels off, seek medical advice instead of self-diagnosing.

Good health isn’t just about making smart choices; it’s also about being prepared for the unexpected. Having a reliable health insurance policy can help you manage sudden medical expenses with ease. To get personalised advice and find a policy that fits your needs, fill out the form on this page and get expert guidance today.

FAQs

1. Can raw honey cause stronger allergic reactions than processed honey?

Yes. Raw or unfiltered honey often contains pollen and bee protein traces that can trigger stronger allergic responses compared to processed honey, which undergoes filtration that removes most of these particles.

2. Is honey safe for people with diabetes if used as a sugar substitute?

Not entirely. While honey has a slightly lower glycaemic index than sugar, it still raises blood glucose levels. People with diabetes should use it sparingly and monitor their blood sugar closely.

3. Does heating honey make it toxic?

Heating honey above 40°C can reduce its nutritional value and antioxidant content, but it doesn’t make it toxic. However, overcooked or caramelised honey may lose its natural enzymes and flavour.

Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis or treatment. Please consult a certified medical and/or nutrition professional for any questions. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.