If you've ever felt itchy, bloated, or experienced stomach cramps after a meal containing parsley, an allergy to this herb could be the cause. Severe parsley allergies are rare, but can potentially cause breathing difficulties or worse. This article covers the signs of a parsley allergy, how common it is, and how to navigate your diet if you think you might be affected.
Can You Actually Be Allergic to Parsley?
Yes, it's possible to be allergic to parsley. It's less common than allergies to foods like nuts or shellfish, but it can occur, particularly since parsley belongs to the Apiaceae plant family, which also includes celery – a more widely recognised allergen. Naturally occurring compounds in parsley called furocoumarins are primarily responsible for reactions in sensitive individuals, and can affect digestion as well as trigger skin reactions like rashes or increased sun sensitivity.
How Common Is This Allergy?
Parsley allergy specifically isn't as well documented as allergies to more prevalent allergens like peanuts or milk. However, because parsley shares a plant family with other known allergens, people sensitive to one member of that family – particularly celery – may also react to parsley.
Signs and Symptoms of a Parsley Allergy or Intolerance
Signs and Symptoms of a Parsley Allergy
Symptoms of a parsley allergy can resemble those of other food allergies, including:
- Nausea, vomiting or diarrhoea
- Hives, rash or itchy skin
- Abdominal pain and cramps
- Breathing difficulties or throat tightness
- Pale or discoloured skin
- Lightheadedness or dizziness
In rare cases, anaphylaxis may occur. Unlike a food intolerance, an allergic reaction involves the immune system and can be severe or life-threatening.
What Are the Symptoms of a Parsley Intolerance?
Parsley intolerance doesn't involve the immune system but can still cause real discomfort, typically including:
- Stomach or intestinal pain
- Bloating
- Constipation or diarrhoea
- Fatigue
What Is Food Intolerance?
Food intolerance occurs when the body has difficulty digesting certain foods. Unlike allergies, intolerances don't involve the immune system and are generally less severe, though they can still cause significant discomfort.
Since parsley belongs to the Apiaceae family, alongside carrots, celery and fennel, cross-reactivity is possible – someone sensitive to parsley may also react to these related foods.
How Common Is a Parsley Intolerance?
Specific data on parsley intolerance is limited, but food intolerances generally are common. Given how often parsley is used in cooking and seasoning, people with sensitive digestion may notice intolerance symptoms fairly regularly without realising the cause.
How Do You Test for a Parsley Allergy or Intolerance?
To help determine whether parsley is behind your symptoms:
- Speak to a doctor or allergist, who can test and consider your medical history
- Keep a food diary tracking intake and any symptoms
- Try an elimination approach, removing parsley to see if symptoms improve
- Consider a food intolerance test for a fuller picture of your sensitivities
What Should You Do If You Think You Have a Parsley Allergy or Intolerance?
If you suspect an allergy or intolerance to parsley, eliminating it from your diet and seeking medical advice is the safest way to confirm your suspicions and avoid potential health risks.
What Foods Should You Avoid With a Parsley Allergy or Intolerance?
Avoiding parsley and foods containing it matters, including dishes where it's used as a garnish or seasoning – soups, sauces and salads in particular.
Reading labels carefully is essential, since parsley can hide in pre-prepared foods and spice mixes under terms like "vegetable extract," "natural flavouring" or "herbal blend."
10 Alternatives to Parsley
- Cilantro (for those not allergic to it)
- Chervil
- Basil
- Tarragon
- Oregano
- Mint
- Dill
- Green onions
- Celery leaves (note: not suitable if you also have a celery allergy, given the shared plant family)
- Arugula
Managing a food allergy or intolerance comes down to informed choices and being aware of what's in your food. If you suspect a parsley allergy or intolerance, our food intolerance tests can help you explore your sensitivities further.
