Avocados are everywhere—on toast, in burritos, blended into smoothies, or even mashed into face and hair masks. This creamy fruit (yes, it’s a fruit, not a vegetable) has become a kitchen staple, thanks to its versatility, mild flavor, and impressive nutritional profile. For most people, enjoying avocados regularly poses no problems at all. But what many don’t realize is that avocados can also cause unexpected side effects, depending on how they’re eaten or applied to the skin.

Like any food, avocados aren’t one-size-fits-all. Here are some potential side effects worth knowing about—so you can enjoy them with confidence while staying aware of possible risks.

1. Skin Irritation

Avocado masks and creams are popular for their moisturizing properties, and many skincare brands now feature avocado oil in their products. For most people, avocado oil is safe when used topically for up to three months. However, some may experience itching or irritation, especially when avocado oil is paired with other active ingredients such as vitamin B12. If you’ve never used avocado on your skin before, it’s best to do a small patch test on an inconspicuous area. Stop using immediately if irritation develops and consult a dermatologist if symptoms persist.

2. Latex Allergy

One lesser-known risk involves people with latex allergies. Avocados share certain proteins with latex, which can trigger an allergic reaction in sensitive individuals. If you’re allergic to latex, there’s a higher chance you might also react to avocados. It’s best to check with your doctor before adding them to your diet if you know you have this allergy.

3. Stomach Allergies in Infants and Children

Avocados are often among the first foods introduced to babies, but not all infants tolerate them well. Some children with existing allergies to foods like milk, oat, or rice may also react to avocados, experiencing vomiting or diarrhea. Since children have more sensitive systems, always introduce new foods one at a time and in their simplest form—without added spices or ingredients. This makes it easier to pinpoint what caused a reaction if one occurs.

4. Interactions with Medications

We often hear about grapefruit interfering with certain medications, but avocados can also pose a risk. For instance, avocados may reduce the effectiveness of warfarin (Coumadin), a common anticoagulant used to prevent blood clots. This could increase the risk of excessive bleeding. If you take warfarin or other blood-thinning medication, consult your healthcare provider and monitor your blood levels regularly to avoid complications.

5. Pregnancy and Breastfeeding Considerations

For pregnant or breastfeeding women, avocados are generally safe when eaten in typical food amounts. However, some limited research suggests that avocado might reduce milk supply in breastfeeding mothers. Since there’s not enough reliable information about using avocado in larger or medicinal amounts during pregnancy or lactation, it’s safest to keep intake moderate and discuss any concerns with your doctor.

Bottom Line

Avocados are nutritious, versatile, and beloved worldwide, but they’re not completely risk-free. From skin irritation to food allergies and even potential medication interactions, it’s important to know how your body responds to them. Most people can enjoy avocados daily without a problem, but if you notice any unusual reactions—whether on your skin, in your digestion, or with your medications—seek medical advice.

A little awareness goes a long way in keeping this superfood both safe and enjoyable.