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Flaxseeds: 7 side effects you need to be aware of

While flaxseeds are great for your health, these are some side effects of flaxseeds that you must know before you consume these.
Flaxseeds
There are some side effects of flaxseeds that one can experience in the case of over consumption. Image courtesy: Freepik
Written by: Aayushi Gupta
Updated On: 31 Dec 2024, 07:00 pm IST

Flaxseeds have a host of benefits when it comes to your over all health and well being. However, before you go overboard in consuming them, you need to be aware of the potential side effects of flaxseeds as well. Flaxseed is a plant-based food that has its origin in southern Europe and Asia. These golden-yellow to reddish-brown seeds have also been used in Ayurvedic medicine for centuries. The seeds are considered healthy, as they provide good fats, vitamins, omega-3 fatty acids, and fibre. Furthermore, flaxseeds are rich in lignans, and have both estrogen and antioxidant properties. Common side effects of flaxseeds include constipation, allergic reactions, bleeding disorders, and much more. Check out how over consumption of these seeds can impact your health.

What are flaxseeds?

Flaxseeds are small seeds that are good for health. They are a rich source of nutrition as they contain omega 3 fatty acids, as well as fibre. They are good for digestion as well as weight loss. Check out ways to include flaxseeds for weight loss in your diet.

A heart plate of flaxseeds
Flaxseeds can cause an upset stomach if had in excess. Image courtesy: Adobe Stock

Side effects of flaxseeds

Here are some side effects of flaxseeds that one must be careful about:

1. May cause allergic reactions

One of the biggest side effects of flaxseeds is that there is a high chance you may have an allergy to flaxseeds and flaxseeds oil. You should stop consuming these seeds, if you notice any itching, swelling, redness, or hives. Vomiting and nausea could also be an indicator of an allergy. Those who consume flaxseeds frequently are more likely to develop allergic reactions. While this allergy is rare, a study published in the Journal of Allergy and Clinical Immunology, recounts an incident where an 11-month-old infant developed severe anaphylaxis after ingesting flaxseed.

2. Might worsen inflammation in the body

One of the benefits and side effects of flaxseeds is that they contain inflammation-reducing omega-3 fatty acids. So while that can help you, it can also create an issue. According to a study published by the Advances in Nutrition, flaxseeds can prove to be problematic. Yes, if consumed in large amounts, it could exacerbate inflammation in the body. 

3. Beware, if you’re trying to conceive

Flaxseeds often act like estrogen, and that means it could hamper the hormonal balance in your body. In certain cases, it could also lead to changes in the menstrual cycle. There are some women, who also experience other hormonal issues like PCOS (polycystic ovary syndrome), uterine fibroids, uterine cancer, and ovarian diseases. This is one of the biggest side effects of flaxseeds that one needs to be aware of. 

4. Unsafe during pregnancy and lactation

Due to their striking similarity with estrogen, flaxseeds may be harmful for pregnant women. Therefore, it is advised to consume flaxseeds, only if your doctor deems it fit. The National Centre for Complementary and Integrative Health states that one of the most harmful side effects of flaxseeds is that they have a mild hormonal effect. However, more research is needed. 

5. May induce loose stools

Loose motions as well as an upset stomach are other side effects of flaxseeds that cannot be missed, states the National Centre for Complementary and Integrative Health. Flaxseeds are rich in dietary fibre, but a sudden increase in consumption can increase the number of bowel movements. You may also experience stomach ache, diarrhea, constipation, and bloating. 

6. It may lead to Intestinal blockage

Flaxseeds should ideally be had with water or any other fluid, but if you consume it without enough liquid, you could end up with intestinal blockage and obstructions. It is particularly dangerous for patients with scleroderma, because flaxseeds can cause severe constipation and blockage. So, don’t consume it unless your doctor gives you a go-ahead!

A spoon of flaxseeds
Flaxseeds should not be consumed by pregnant women. Image courtesy: Adobe Stock

7. Reactive with other medication

Because flax seeds are high in fibre, they contribute to intestinal blockage and constipation. In this condition, the absorption of certain medications and supplements gets inhibited. It is best to avoid it, especially when you’re on oral medication to reduce blood sugar levels.

Make sure to keep these side effects of flaxseeds in mind while consuming these tiny nutritional powerhouses.

Related FAQs

Who should not eat flax seeds?

People with a bowel obstruction, an inflamed bowel as well as esophagus should stay away from flax seeds.

How much flaxseed can be had every day?

While there is no fixed dosage of flaxseed that can be had everyday, about 1-2 tablespoons are safe to eat per day.

Disclaimer: At Health Shots, we are committed to providing accurate, reliable, and authentic information to support your health and well-being. However, the content on this website is intended solely for informational purposes and should not be considered a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalised advice regarding your specific medical condition or concerns.

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About The Author
Aayushi Gupta
Aayushi Gupta

Aayushi Gupta is a health writer with a special interest in trends related to diet, fitness, beauty and intimate health. With around 2 years of experience in the wellness industry, she is connected to leading experts and doctors to provide our readers with factually correct information.

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