How Do Children Become Chronically Ill?

 

“The question is not whether children are capable of becoming healthier. The question is whether adults are willing to create an environment that allows it.”

 

This is a real story of real people. It is not about panic, it is about patterns. More and more children are developing laboratory markers that were once mostly associated with adults: elevated HbA1c, chronic low-grade inflammation, hormonal imbalances, poor metabolic flexibility, and early signs of stress physiology. These are not isolated medical curiosities. They are lifestyle signals.

A year ago, the nutritionist warned the parents based on the children’s (three boys age 6, 9 and 12) blood work that several markers were moving in a dangerous direction, including repeatedly elevated hemoglobin A1c values, signs of low-grade inflammation through hsCRP, alarming hormonal panel and increasing BMI values. These were not subtle findings. They were early warning signs of metabolic dysfunction and future lifestyle disease risk. What do you think has happened since that conversation? If you guessed that despite these warnings meaningful lifestyle changes were not implemented and that the children continued gaining weight, you are right, unfortunately.

The blood works

Let’s take a look at some specifics regarding the boys’ blood results. The strongest repeated marker across the results was—and most likely still is—elevated hemoglobin A1c (HbA1c). Values between 6.1% and 6.5% are consistently above the normal range. HbA1c reflects average blood sugar levels over approximately three months. Even though fasting glucose and insulin were within normal ranges and the HOMA index did not suggest severe insulin resistance at that moment, elevated HbA1c indicated that the body is already struggling with blood sugar regulation during daily life. Children do not develop elevated HbA1c from nowhere. It usually reflects excessive intake of ultra-processed carbohydrates, frequent snacking, sugary drinks, poor sleep, chronic stress, low physical activity, or a combination of all of them. This matters because childhood metabolic dysfunction often progresses silently for years before obesity or type 2 diabetes become clinically obvious.

These results are even sadder when you learn about what actually goes on in the home of these children. Because when you hear from a 12 year old how hard it is to say no to sweets constantly offered to them by their parents, when you actually see that the 12 year old already understands more than his parents, and that he is more desperate than the parents ever were, you know it is a game hard to win.

Another concerning tendency in the blood work was low-grade inflammation. High-sensitivity CRP (hsCRP) was elevated. What does that mean? It means that chronic inflammation is increasingly associated not only with obesity and cardiovascular disease but also with mood disorders, fatigue, poor concentration, and mental health difficulties. In children, chronic inflammation is often connected to poor nutrition, excessive sedentary behavior, inadequate sleep, chronic stress exposure, and environmental factors.

The hormonal markers also tell a story. Research increasingly supports the connection between childhood obesity, metabolic dysfunction, inflammation, and hormonal disruption in boys. A 2021 study[1] found that boys with obesity showed significantly lower testosterone levels during puberty together with altered growth and endocrine patterns. Other research[2] has shown that obesity-related chronic low-grade inflammation can interfere with hormonal regulation, including testosterone production and adrenal hormone balance. Low testosterone is already a problem for the three boys. The study on DHEA-S in children published in The Journal of Clinical Endocrinology and Metabolism[3] also suggests associations between adrenal hormones, body fat, inflammation, cholesterol metabolism, and metabolic risk markers already in prepubertal years. This is important because these physiological changes are not only linked to future cardiometabolic disease but may also influence mood regulation, stress resilience, motivation, concentration, and psychological well-being during development.

An additional important factor is that the BMI of all three children is high, placing them in the at-risk-of-overweight or overweight category. This significantly strengthens the interpretation of the laboratory findings. Elevated HbA1c together with excess body weight is one of the strongest early warning combinations for future metabolic disease, including type 2 diabetes, hypertension, fatty liver disease, sleep problems, and cardiovascular dysfunction. Excess adipose tissue is also biologically active: it increases inflammatory signaling, alters hormone balance, and is strongly associated with higher rates of anxiety, depression, low self-esteem, and social difficulties in children.

What are the most common lifestyle-related health problems in children between 6 and 13 today? The list is growing rapidly:

  • childhood obesity and metabolic syndrome
  • early insulin resistance and prediabetes
  • fatty liver disease
  • hypertension and early vascular dysfunction
  • anxiety, depression, emotional dysregulation
  • sleep disorders and chronic fatigue
  • attention and concentration problems
  • vitamin and mineral deficiencies despite excessive calorie intake
  • sedentary behavior-related musculoskeletal problems

The blood tests show tendencies that overlap with several of these modern childhood problems, especially metabolic dysregulation and low-grade inflammation. Fortunately, childhood is also the period where lifestyle changes can still produce dramatic improvements.

Parents often believe that children are naturally resilient and will simply “grow out of” unhealthy habits. Unfortunately, biology does not work like that. The body adapts to what it experiences repeatedly. If children are chronically exposed to excess sugar, ultra-processed food, poor sleep, emotional stress, lack of movement, and constant screen stimulation, their metabolism and nervous system adapt accordingly.

What should parents really do?

  1. Stop treating food as entertainment. Most children do not need more snacks, cereals, desserts, sweetened yogurts, juices, sports drinks, or processed convenience foods. They need stable blood sugar, protein, healthy fats, fiber, minerals, hydration and real meals.
  2. Movement must become non-negotiable. Children need daily physical activity that increases heart rate and develops strength, coordination and endurance. Walking is good but outdoor play is better. Organized sports can help but sitting for most of the day and then compensating with one hour of exercise is not enough.
  3. Sleep is medicine. Many children today are chronically sleep deprived due to screens, overstimulation, irregular schedules and stress. Poor sleep directly worsens insulin sensitivity, appetite regulation, emotional resilience, learning capacity and mental health.
  4. Reduce screen exposure aggressively. Excessive screen time is associated with sedentary behavior, inadequate emotional regulation, sleep disruption, increased anxiety symptoms, attention problems and unhealthy eating patterns. A child’s nervous system was not designed for constant digital stimulation.
  5. Parents must model the behavior they want to see. Children copy what adults normalize. If parents eat poorly, sleep poorly, spend evenings on phones, avoid movement and use food for emotional comfort, children learn the same pattern.

These blood results are not a life sentence. They are an opportunity. The body of a child is highly adaptable when the environment improves. Better nutrition, consistent movement, restorative sleep, emotional stability, reduced screen time, and healthier family routines can significantly improve metabolic and inflammatory markers within months. The question is not whether children are capable of becoming healthier. The question is whether adults are willing to create an environment that allows it.

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References:

 

[1] Kempf, Elena et al. 2021.

[2] Ciężki, Sebastian et al. 2024.

[3] Mäntyselkä, Aino et al. 2018.