RD Andy Desantis, Toronto, Ontario
Symptoms usually appear within minutes to a few hours after eating the food and may include:
- Hives, itching, or rash
- Swelling of the lips, tongue, throat, or face
- Stomach pain, nausea, vomiting, or diarrhea
- Wheezing, coughing, or difficulty breathing
- Dizziness or fainting
Food allergies occur when the immune system mistakenly identifies a food protein as harmful and triggers a reaction. They can range from mild symptoms to life-threatening emergencies.
Common Food Allergens
The most common food allergens include:
- Peanuts
- Tree Nuts
- Milk
- Eggs
- Wheat
- Soybeans
- Fish
- Shellfish
RD Andy Desantis, Toronto, Ontario
Impact on children and families
Children with food allergies may experience bullying, embarrassment, or anxiety.
Parents and caregivers often report elevated stress and anxiety related to keeping their child safe.
Possible biological links
Some research suggests that allergic conditions may be associated with higher rates of mental health symptoms such as anxiety or depression.
Scientists are studying whether immune system activity and inflammation play a role, but the exact mechanisms are not fully understood.
How food allergies can affect mental health
Stress and anxiety
People with serious food allergies may experience ongoing worry about accidental exposure, especially if reactions can be life-threatening.
This can lead to increased anxiety, hypervigilance, and fear around eating, traveling, social events, or dining out.
Social isolation
Food allergies can make school, work, parties, restaurants, and family gatherings more challenging.
Feeling different or excluded may contribute to loneliness, low mood, or reduced quality of life.
RD Andy Desantis, Toronto, Ontario
Food allergies can have a significant impact on nutrition, especially if major food groups must be avoided. A food allergy occurs when the immune system reacts to a specific food protein, potentially causing symptoms ranging from mild itching to severe anaphylaxis.
Common Food Allergies and Nutritional Concerns
| Food Allergy | Nutrients That May Be Affected |
|---|---|
| Milk | Calcium, vitamin D, protein, riboflavin |
| Egg | Protein, vitamin B12, selenium, choline |
| Wheat | Fiber, B vitamins, iron |
| Soy | Protein, iron, some B vitamins |
| Peanut/Tree Nuts | Healthy fats, protein, vitamin E, magnesium |
| Fish | Omega-3 fatty acids, vitamin D, protein |
| Shellfish | Protein, zinc, selenium |
RD Andy Desantis, Toronto, Ontario
A severe allergic reaction called anaphylaxis can be life-threatening. Signs include:
- Difficulty breathing
- Swelling of the throat
- Rapid drop in blood pressure
- Loss of consciousness
If anaphylaxis is suspected, use prescribed emergency medication (such as an epinephrine auto-injector) and seek emergency medical help immediately.
RD Andy Desantis, Toronto, Ontario
If food allergies are leading to:
- Persistent anxiety about eating
- Avoidance of many foods beyond what is medically necessary
- Panic attacks
- Depression or hopelessness
- Significant interference with daily life
it can be helpful to speak with both an allergist and a mental health professional. Treatment may involve allergy management, counseling, cognitive behavioral therapy (CBT), or support groups.