Can Early Peanut Exposure Prevent Allergies in Infants?

November 21, 2025 at 11:11 AM
The Independent

Recent studies suggest that the early introduction of peanuts into infants’ diets may significantly reduce the risk of developing peanut allergies. A US study observed a decline in peanut allergy rates among infants after updated guidelines recommended introducing peanuts to high-risk children by the age of one. This approach aligns with findings from the UK, where early peanut exposure reduced allergy rates by up to 80%. Food allergies, including peanut allergies, remain a global concern, and Malta’s dining scene is increasingly accommodating dietary needs with allergy-friendly menus and transparent labeling. Emphasizing early exposure under medical guidance and fostering oral tolerance could help families in Malta reduce food allergy risks while enjoying the island’s rich culinary traditions. Enhanced awareness, testing, and restaurant practices are essential for creating a safer and more inclusive dining experience for all.

Can Early Introduction of Peanuts Prevent Food Allergies? Here’s What Recent Studies Reveal

Peanut allergies are among the most common food-related allergies, affecting between 1% and 2% of people in Western countries. For years, the prevalence of peanut allergies has been on the rise, but a recent study from the US offers hope for reversing this trend. According to the study, the rate of peanut allergy diagnoses in infants has declined, suggesting that early introduction of peanuts might play a key role in prevention.

Food allergies occur when the immune system reacts abnormally to otherwise harmless substances, like certain foods or pollen. Peanut allergies, in particular, are not only widespread but also the leading cause of fatal food reactions. In Malta, where Mediterranean dining often includes a variety of nuts and legumes, understanding food allergies is essential for promoting safe and healthy eating habits.

Between 2008 and 2018, the proportion of people with food allergies in England more than doubled, while similar data from the US showed food allergies tripled between 1997 and 2008. These increases are attributed to multiple factors, including changes in the gut microbiome, exposure to environmental pollutants, and genetic predispositions. Certain inflammatory health conditions, like atopic dermatitis, are also linked to a heightened risk of developing food allergies in infants.

In contrast to these concerning trends, the US study points to a decline in peanut allergies among infants since 2015. This shift coincides with updated allergy guidelines that recommend introducing peanuts early to children considered at risk, such as those with atopic dermatitis. Previously, allergy guidelines advised avoiding peanuts altogether during pregnancy, breastfeeding, and infancy, but this approach did little to curb allergy rates.

The research team analyzed data from nearly 39,000 children before the guideline change and 47,000 children afterward. Their findings showed that peanut allergy rates dropped from 0.8% to 0.5% following the introduction of peanuts into infants’ diets by the age of one. These results align with prior studies from the UK, which found that early peanut exposure before age five significantly reduced the likelihood of developing allergies.

Malta’s Approach to Food Allergies

For families in Malta, where peanuts may feature in international cuisines or snacks, these findings underscore the importance of safe dietary practices for children. With a growing emphasis on health-conscious dining and Mediterranean diets that prioritize fresh, wholesome ingredients, understanding food allergies is crucial for parents, chefs, and restaurateurs alike.

Restaurants across Malta are increasingly accommodating dietary needs, offering allergy-friendly menus and transparent labeling for diners. This is particularly valuable for families navigating food allergies, as early exposure to allergens like peanuts may reduce risks while ensuring children can safely enjoy varied and nutritious meals.

Oral Tolerance: A Key Factor

The concept of oral tolerance plays a pivotal role in these findings. Oral tolerance occurs when the immune system learns to ignore a potential allergen introduced through the gut during early childhood. Although the mechanisms behind oral tolerance are not fully understood, researchers believe it involves switching off immune responses to prevent mistaking certain foods for harmful invaders.

In Malta, where traditional dishes often include legumes like chickpeas and lentils, and nuts are commonly used in desserts, fostering oral tolerance in infants could be a proactive way to reduce food allergies. Parents may consider introducing peanuts and other potentially allergenic foods under medical guidance to ensure their children benefit from early exposure without risking adverse reactions.

Shifting Guidelines

The updated guidelines in the US followed a major UK review in 2008, which found no evidence that avoiding peanuts during pregnancy, breastfeeding, or early childhood reduced allergy risks. Instead, randomized trials showed that consistent consumption of peanuts by high-risk infants from 11 months of age led to an 80% lower rate of peanut allergies by age five compared to children who avoided peanuts entirely.

In 2015, the US adopted similar guidelines, recommending early introduction of peanuts to infants at risk. While these changes have shown promise, questions remain about the best age for introducing allergens and why certain conditions, such as atopic dermatitis, increase susceptibility to food allergies.

Addressing Food Allergies in Malta

Despite these encouraging findings, food allergies remain a growing concern globally, including in Malta. Dining establishments, health professionals, and policymakers must work together to ensure access to allergy diagnosis and management tools, particularly for underserved communities. In Malta, where dining is a cornerstone of social and cultural life, ensuring allergy-friendly practices in restaurants can enhance the overall dining experience for families and individuals with dietary restrictions.

From allergy-safe menus to greater awareness about early exposure strategies, Malta has the opportunity to lead the way in fostering healthier eating habits while promoting longevity and well-being. By combining traditional Mediterranean cuisine with science-backed approaches to food allergies, families across the island can enjoy a safer and more inclusive dining scene.

Moving Forward

While the early introduction of peanuts shows promise for reducing allergy risks, much remains unknown. For instance, why do some individuals develop food allergies later in adolescence or adulthood? Additionally, barriers to diagnosis and treatment persist, particularly in disadvantaged areas.

In Malta, where health and longevity are increasingly prioritized, addressing these gaps is crucial. Whether through improved allergy testing, awareness campaigns, or enhanced restaurant practices, tackling food allergies can help ensure everyone enjoys the vibrant culinary offerings the island has to offer.

For parents and food lovers alike, the findings from this US study highlight the importance of informed dietary decisions. With guidance from healthcare professionals and a proactive approach to introducing allergens, Malta’s families can take steps to promote healthier, allergy-free lives.