Researchers wanted to explore different pathways by which parasites can lead to stunting.
Introduction
Do you know what stunting is? Physical stunting happens when a child doesn’t grow as tall as they should for their age. It’s not about being short – it’s a sign that something is wrong with their health or environment. It’s a big problem that affects huge numbers of kids worldwide. In 2020, stunting affected over 149 million children under 5! (See Fig. 1.) Without early treatment it can cause long-term issues. For example, kids can get sick more often or have difficulty learning.
But what causes stunting? Some of the main reasons are poor nutrition and exposure to recurrent infections or diseases. For many years people have suspected that parasites can also cause stunting. These are organisms that live inside (or on) our bodies and often cause us harm. But how can parasites cause childhood stunting? What are the different ways parasites could affect growth? And is it possible to prevent it? This is what we wanted to find out!
Methods
We looked at information about stunting from different sources. We read reports and data from a variety of organizations, such as the World Health Organization. These reports helped us understand how common stunting is. They also showed us what effects it has on children’s health and growth.
We then compared how different countries are trying to stop stunting. We also read research articles from health professionals and scientists. This helped us understand stunting and ways to fight it. Our goal was not to ask if parasites cause childhood stunting, but to find out exactly how they cause it. With all this combined information, we are able to share our ideas on how parasites can affect growth. This will help future work aimed at treatment or prevention.
Results
So, what are the different ways parasites could affect a child’s growth? (See Fig 2.)
Parasites can make it hard for children to eat and digest their food properly. Some parasites cause stomach pain or make kids lose their appetite. Others take important nutrients from the food that the child eats. So, even if children are eating, they’re not getting the vitamins, minerals, carbohydrates, and proteins they need to grow.
Many parasites cause diarrhea. That makes the body lose water and nutrients. If kids get diarrhea often, their bodies can’t absorb nutrients they need to grow. This is especially true if they’re very young. Researchers have found that kids grow more slowly if they have diarrhea often.
There are parasites that can cause something called environmental enteric dysfunction. This means they damage the gut, causing it to become inflamed or even ‘leaky’. The body then can’t take the food in properly to get the nutrients it needs.
Stunted children often have less healthy gut bacteria. Parasitic infections can make things worse, since some can change the balance of bacteria in the gut.
When our bodies have an infection, our immune system has to work very hard to fight it. This goes for parasitic infections, too. But fighting infections uses up a lot of energy that the body could use to grow.
There are parasites that live in the blood, such as the one causing malaria. This can lead to anemia. This means that the body doesn’t get enough oxygen. When this happens, kids feel tired and weak. They also can’t grow properly.
Some parasites can even affect children’s genes, including the ones that tell the body how to grow. This has a big impact on their development if kids get infected very young.
Discussion
The link between parasitic infections and stunting is complicated but important. It’s clear that parasites can affect children’s growth. They interfere with nutrition. They also damage the gut and put stress on the immune system. Even if kids are eating well, these infections can undo the benefits of good nutrition. Plus, parasitic infections happen when children are growing the fastest. If kids grow slower during the first two years of their lives, it’s hard for them to catch up later.
It’s important to remember that stunting doesn’t only affect height. It can also impact brain development. This makes it harder for children to learn and succeed in school. Over time, this can affect their ability to get good jobs. This might keep families trapped in cycles of poverty. So, addressing stunting is not only about making sure children get enough food. It’s also about preventing and treating parasitic infections.
Conclusion
Most parasitic and many other infections come from contaminated water and poor hygiene. You can get them from undercooked or raw food as well. There are several ways you can stay fit and healthy!
Wash your hands often: always wash them with soap, especially before eating.
Drink safe water: only drink treated or boiled water.
Cook food thoroughly and ensure that meat and fish aren’t raw. Wash fruit and vegetables before eating.
