This blog post was authored by Alyssa Dittner, BS, RRT, and reviewed by the Bronchiectasis and NTM Content Review and Evaluation Committee.
Ultra-processed foods (UPFs) are whole foods that have been heavily changed. UPFs often include added ingredients like preservatives, extra sugar, and food coloring.1 These foods have become a large part of many people’s diets. They are convenient and have a long shelf life.1 However, choosing UPFs can affect weight and overall health, leading to both underweight and overweight individuals experiencing malnutrition and hidden hunger.
Body mass index (BMI) is a way to estimate body fat by looking at a person’s height and weight.2 One study found that for those with bronchiectasis, BMI alone doesn’t tell the whole story of their health.2 Weight is only part of the picture when it comes to health. UPFs can negatively impact how often someone may become sick and affect strength and muscle mass.3,4 Many people are concerned with being overweight; however, being underweight can also weaken the lungs and make it harder to fight off infections.2
Malnutrition can occur when the body doesn’t get enough vitamins and minerals, even if a person eats a normal amount of food as defined by the U.S. Department of Health and Human Services.5 Many people have diets high in calories from UPFs and feel full. However, they may have malnutrition and hidden hunger because they are consuming fewer vitamins and minerals than their bodies need.6
UPFs can include sugary drinks, packaged snacks, instant meals, and processed meats.1 These foods are often high in sugar, unhealthy fats (like saturated and trans fats), and salt, but are low in important vitamins and minerals.1 In the U.S., more than half of the average person’s diet comes from UPFs, and this amount increases each year.3
Hidden Hunger: The Quiet Malnutrition
While UPFs often have plenty of calories, they lack important micronutrients. These are small amounts of vitamins and minerals in food that are important for the body to function properly.7,8 Micronutrients include vitamin D, iron, magnesium, and zinc.7,8 Diets low in micronutrients can lead to serious health problems and increased symptoms, including:4,5
- A higher risk of infection.
- Low energy levels and feeling foggy.
- A greater chance of getting chronic diseases, like heart disease, type 2 diabetes, and some cancers.
- Overeating because the body is still hungry for nutrients.
How Diet Affects the Lungs
Studies have shown that a poor diet can affect lung health.5 For example, many people don’t have enough vitamin D. Low vitamin D levels are linked to more frequent lung infections and inflammation.2 This can make respiratory symptoms worse.2 Being underweight (having a low BMI) can also lead to weaker lungs and poorer health outcomes.2