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Side Effects of Buckwheat Flour

author image Alli Rainey
A professional writer since 1997, Harvard graduate and pro rock climber Alli Rainey's articles have appeared in "Climbing Magazine," "Rock & Ice" and "Men's Fitness," among many others. Rainey is also an ACTION certified personal trainer (CPT) and climbing coach.
Side Effects of Buckwheat Flour
A bowl of buckwheat flour and a rolling pin. Photo Credit: YelenaYemchuk/iStock/Getty Images

Most Americans consume buckwheat flour mainly in pancakes, if they consume it at all. However, you shouldn't overlook buckwheat. Its amino acid composition surpasses that of all other cereals, according to the University of Wisconsin Extension's "Alternative Field Crops Manual." In addition, buckwheat offers people with celiac disease a gluten-free alternative source of whole grains. Though buckwheat is a healthy dietary addition for most people, it may cause unwanted side effects in certain individuals.

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If you are allergic to buckwheat, eating or inhaling it can cause severe reactions such as nausea, vomiting, hives, dizziness, shortness of breath, speech loss and the sensation of your throat closing. If you are allergic to buckwheat, you should avoid exposure because potential allergic reactions can be severe and may include life-threatening anaphylactic shock.

Gastrointestinal Distress

Buckwheat flour contains 3 grams of dietary fiber per 1/4-cup serving. This amount of dietary fiber can cause gastrointenstinal symptoms like gas and cramping in sensitive individuals, particularly people with Crohn's disease and irritable bowel syndrome, or IBS. Determining whether buckwheat flour exacerbates your condition requires experimentation on your part, according to the Cleveland Clinic. Some people with IBS find that increasing dietary fiber intake helps quell symptoms, while it can worsen symptoms in others, according to the Mayo Clinic website.

Weight Gain

To avoid unwanted calories and weight gain from eating buckwheat flour, watch your portion size. Dry buckwheat pancake mix contains 104 calories, 22 grams of carbohydrates, 3 grams of protein and 1 gram of fat per 1/4 cup. If the mix calls for extra ingredients like eggs and milk, this increases your caloric intake. Be careful how your top your pancakes, too; replace maple syrup and butter with fresh fruit for fewer calories and less fat.


Buckwheat flour has the potential to become rancid quickly due to its relatively high fat content, according to the University of Wisconsin Extension's "Alternative Field Crops Manual." This tendency towards rancidity becomes more marked in hot summer months. Though you're not likely to get sick as an immediate consequence of eating rancid buckwheat, long-term or regular ingestion of rancid foods may damage your cells and promote clogged arteries, according to the Colorado State University Extension.

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