EVANSTON, Ill. — Scientists may have taken an important step toward limiting instances of food allergies in the future.

A new study from Northwestern Medicine linked infant and childhood food allergies to a mix of environmental and genetic factors. Professor Joan Cook-Mills headed up the research at Northwestern University and said they found that allergies were triggered by a combination of genetics that alter skin absorbency, the use of baby wipes that left soap on the skin, exposure to allergens in dust and skin exposure to food - even by something as simple as a sibling who has eaten peanut butter kissing a baby.

"What's unique is that this combination of household exposures induces food allergies early in life,” Cook-Mills said. “And if you leave out any of the components of this combination, it doesn't induce food allergy."

Cook-Mills said phase two of the study will be to figure out why food allergies have been on the rise. According to the Centers for Disease Control and Prevention, they affect an estimated 4-6 percent of children in the United States. Recent data also show hospitalizations with diagnoses related to food allergies have increased among children.

Cook-Mills made the discovery in the lab by exposing peanuts to neonatal mice. The peanut alone had no effect. But in cases in which there was a combination of peanut exposure, exposure to allergens in dust and genetic mutations that could have been caused by something as simple as leaving soap on the skin, a food allergy developed.

She said what this means is that parents can reduce the risk factors for their child by doing simple things like washing their hands before handling a baby and limiting the use of infant wipes.

"These are modifiable environmental factors, but there may be also a better understanding of how food allergies develop,” Cook-Mills said; “and therefore we may be able to discover new ways to control this development, or even responses."

The study was supported by National Institutes of Health grants, and is published in the Journal of Allergy and Clinical Immunology.


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As summer kicks into full gear, North Carolina dentists stressed the importance of maintaining children's dental health.

Dr. Miranda Kalaskey, a dentist in Raleigh and member of the North Carolina Dental Society, said with more outdoor activities and changing routines, dental care can often be neglected, leading to cavities and dental trauma. Her advice is for parents to keep up with preventive care and encourage healthier eating habits.

"Try to pick a healthy summer snack. That can be fruit. That can be vegetables. Just not something dry, not something processed," Kalaskey outlined. "And the more processed you have, the more dried it is, the more likely it is to stick to their teeth."

She pointed out left-behind food can cause cavities. Tooth decay is the most common chronic disease among children in the U.S., with more than half of eight-year-olds having had at least one cavity in their baby teeth, according to the Centers for Disease Control and Prevention.

Warmer weather also means more outdoor play. Kalaskey highlighted the rise in dental trauma cases during the summer because of increased outdoor play and sports activities.

"Oftentimes, kids are going and playing basketball, and sometimes high schools are really good about, 'Hey, here's a mouth guard,' or 'You need to get a mouth guard for practice,'" Kalaskey noted. "But during the summer, a lot of times kids will play with other kids, which is great, but making sure they're aware that tooth trauma is a thing."

If a tooth gets knocked out, contact your dentist immediately. If it is after hours, she suggested the ToothSOS app for guidance.

She added another major key to dental hygiene for kids over the summer is a consistent schedule.

"Summer oftentimes is going to change that routine but your brushing, flossing routine does not need a change," Kalaskey recommended. "You still want to do brushing twice a day, flossing at least once a day. So kind of making sure we incorporate that, even though the kids might be waking up at 10 o'clock."

Kalaskey emphasized routine is also important for dental visits. She advised children should be seen by a dentist when they get their first tooth and then every six months afterward. In addition to keeping teeth healthy, she stressed it also builds a good relationship with dental visits in the long term.


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A Virginia community health center is part of a program addressing food scarcity.

The National Association of Community Health Centers' 2024 Innovation Incubator creates ways to expand healthy food access. Tri-Area Community Health Center's Laurel Fork location will have funding and guidance from experts to help them design and test community-based solutions.

Merrill Warschoff Press, senior vice president of partnership, development and innovation for the National Association of Community Health Centers, said the centers are uniquely suited to address local food issues.

"Health centers are highly effective and innovated with integrated models of care," Press explained. "They reach far beyond the walls of the traditional exam room, not only to prevent illness and treat it but to really address the social drivers that may cause poor health."

Food insecurity has grown since pandemic-era programs ended in 2023. Emergency allotments provided SNAP recipients with an added $95 per month for 470,000 families statewide. However, some people are above or below SNAP's qualifying threshold.

Other issues stem from food prices. The Consumer Price Index shows food prices grew between 2022 and 2023 but in recent months, prices have been declining.

A primary goal of the Innovation Incubator is to discover best practices for providing care for millions of people and share them with health centers nationwide. Press noted the methods being worked out can help varying populations.

"There are many health centers who have large populations of patients who come from other countries and are used to certain foods, and have different preferences," Press observed. "Being able to work with them in their own language with the foods that they like and trust is really valuable to improving access to food that'll make a difference in their lives."

Food pantries have been key to reducing food insecurity wherever possible. Virginia food banks saw a 5% to 10% increase in demand at the end of 2022, which is problematic since food banks nationwide are seeing donations decline and reduced commodities from the Emergency Food Assistance Program.

A southeast Arkansas healthcare system is using grant money to help increase its patients' access to healthy foods.

Mainline Health Systems will use the funds to focus on healthy eating habits for people who are expecting.

Work will include showing families how to grow their own fruits and vegetables, and establishing farmers markets that cater specifically to the needs of pregnant women and new mothers.

Health System Registered Dietitian Jane Pelkki said they will teach new moms the basics of eating healthy.

"Eating healthy doesn't have to cost a lot, that it's doable and that there are food assistance programs such as WIC and SNAP, food stamps," said Pelkki. "And we're also going to provide some food to help moms understand what a healthy meal looks like."

Mainline is one of eight health systems nationwide to participate in the National Innovation Incubator program.

It's sponsored by the National Association of Community Health Centers and the global healthcare company, Abbott.

Research shows almost 13% of U.S. households experience food insecurity - or don't have access to an affordable, nutritious diet.

Merrill Warschoff-Press - senior vice president at NACHC - said the facilities play an integral part in improving the overall health of patients, and address social issues that may cause illnesses.

"They reach far beyond the walls of the traditional exam room, not only to prevent illness and treat it, but also to really address the social drivers that may cause poor health," said Warschoff-Press, "so whether it's food insecurity and poor nutrition or even housing, joblessness, mental illness, substance use disorders."

At the end of the six-month pilot program, results will be shared with 1,400 health centers nationwide. That could impact the overall health of more than 31 million patients across the country.