Study Establishes Link Between Air Pollution and Children's Mental Health

Researchers have found that short-term exposure to ambient air pollution was associated with exacerbations of psychiatric disorders in children one to two days later.

The study, also found that children living in disadvantaged neighbourhoods may be more susceptible to the effects of air pollution compared to other children, especially for disorders related to anxiety and suicidal.

The fact that children living in high poverty neighbourhoods experienced greater health effects of air pollution could mean that pollutant and neighbourhood stressors can have synergistic effects on psychiatric symptom severity and frequency," said study lead author.

Three new studies from Cincinnati Children's Hospital Medical Center, in collaboration with researchers at the University of Cincinnati, highlight the relationship between air pollution and mental health in children.

Two other Cincinnati Children's studies also link air pollution to children's mental health and found an association between recent high traffic related air pollution (TRAP) exposure and higher generalised anxiety.

The study is believed to be the first to use neuroimaging to link TRAP exposure, metabolic disturbances in the brain, and generalized anxiety symptoms among otherwise healthy children.

The researchers found higher myoinositol concentrations in the brain - a marker of the brain's neuroinflammatory response to TRAP.

The other study found that exposure to TRAP during early life and across childhood was significantly associated with self-reported depression and anxiety symptoms in 12 year olds.

Collectively, these studies contribute to the growing body of evidence that exposure to air pollution during early life and childhood may contribute to depression, anxiety and other mental health problems in adolescence, said the researchers.


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Silent Asthma !

Silent Symptoms of Asthma

A couple of sources referred to the “silent symptoms and signs of asthma.” The most well-known symptom of asthma is wheezing, that whistling sound your breath makes, usually on exhaling. Coughing is another well-known symptom of asthma. Neither of those are silent. But there are also other standard symptoms, such as:

• Shortness of breath
• Chest tightness

Those symptoms could be referred to as “silent,” since they don’t specifically make noise, I guess. And if those are your only symptoms, health care professionals might not take them as seriously as a chronic cough or wheezing.
Other so-called “silent” symptoms might include:

• Yawning or sighing, when frequent
• Rapid, shallow breathing
• Frequent respiratory infections, including colds, that are hard to shake
• Difficulty sleeping
• Fatigue

However, these are not true clinical symptoms of asthma. Instead, they are more likely the effects of having asthma that is not well-controlled.

Silent Chest

Another use of the word silent in connection with asthma that I saw mentioned a few times (but never in the credible sources I am used to using) was “silent chest.” This term appears to be linked at times to a type of  asthma attack called " status asthmaticus".

These are the hallmark features of this type of asthma attack:

• Airway inflammation and obstruction occurs suddenly and rapidly
• Little or no wheezing
• Breathing becomes extremely difficult and worsens with associated fatigue
• Difficult to detect at first by lay people
• Life-threatening

In short, the airways may seem to almost shut down during this type of asthma exacerbation. I remember when my children were in grade school, there was a playground death at their school of a student who had one of these rapid onset asthma attacks. There was little time for his teachers to figure out what was wrong, let alone to call for emergency help in time.

In Summary

There are a number of anecdotal articles about silent asthma. But it does not appear to be a term used extensively in asthma research. So, while you may have been told you or your child have “silent asthma,” it is not a true classification. My advice? Ask your health care professional to explain in detail what is meant by this term in reference to your health status. Find out what you need to know to stay safe and healthy.

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