Schoolbag Essentials: Good Sleep, Sunshine, and a Quality Diet

September represents a new chapter in life. Kindergartens and schools open their doors, responsibilities begin, and children's backpacks are filled with slippers, books, and notebooks. Parks and playgrounds are slowly replaced by indoor group settings where children spend most of their day. Along with this new routine begins the well-known race with immunity, as we try to help our little ones overcome winter obstacles safely and healthily.

Younger children are significantly more susceptible to viral infections because their immune system is not yet fully developed. Statistics show that little ones in group settings can have between 8 and 12 respiratory infections a year. The symptoms are familiar to everyone: a stuffy or runny nose, red and watery eyes, fever, coughing, sneezing, and often skin rashes, fatigue, and weakness, accompanied by a loss of appetite, vomiting, or diarrhea.

Food as the First Line of Defense

A nutritionally poor diet, full of simple sugars and highly processed foods, directly weakens a child's immunity. Simple sugars feed bad bacteria in the gut and are proven to reduce the ability of white blood cells to recognize and destroy viruses and bacteria. The foundation of strong immunity is a "colorful plate": an abundance of fresh fruits and vegetables, quality proteins, whole grains, healthy fats, and adequate fluid intake.

• Healthy gut flora: Preserving the gut microbiota is crucial. The diet must include fermented dairy products like kefir and yogurt, which are natural probiotics.
• Building blocks: Proteins from meat, eggs, and legumes, as well as fatty fish (salmon, mackerel, sardines), provide essential amino acids for antibody synthesis. Fish is especially important because it is rich in omega-3 fatty acids, which reduce inflammatory processes in the body and are crucial for the proper development of a child's brain, memory, and concentration in class.

Precise Supplementation: Support from Nature and the Pharmacy

• Vitamin D3: The sun is the best natural source of vitamin D3. However, as days get shorter and children spend less time outdoors, it is necessary to introduce vitamin D3 supplements (drops or syrups) from October through March. This vitamin activates the cells that destroy pathogens, regulates muscle function, ensures proper bone development, and directly reduces the frequency of respiratory infections.
• Zinc and Vitamin C: These nutrients act synergistically. Zinc is proven to slow down and prevent the multiplication of rhinoviruses in the nasal mucosa, significantly shortening the duration of a cold, while vitamin C stimulates white blood cell production and protects cells from oxidative stress.
• Immunoglucan: This is a specific, natural polysaccharide extracted from the oyster mushroom. It acts as a fantastic "coach" for a child's immunity, raising the alertness level of defense cells and demonstrably reducing the frequency and intensity of infections.

"For children older than one year, the recommendation is to start polyvitamin therapy at least two weeks before returning to daycare or school, and to continue with adequate supplementation throughout the entire winter period," advises pediatric specialist Dr. Jelena Divčić.

Phone or Playground Slide: What Truly Develops a Child's Mind?

Spending time outdoors provides much more than just play and motor skill refinement. Through socializing with peers, children develop social and language skills, learning empathy and conflict resolution. Also, exposure to natural daylight is proven to reduce the risk of nearsightedness developing in children, which is a growing health issue today.

In a world where technology is becoming an unavoidable part of everyday life, digital devices can be useful for education. However, excessive screen time carries serious risks for a child's overall development:

• Cognitive development: Research shows a clear connection between excess screen time and learning difficulties. In teenagers, it drastically reduces attention span and concentration. For younger children, studies warn that every additional hour of daily screen time can lower math performance by up to 6%.
• Language development: Language skills are not acquired through passive listening, but exclusively through active communication with peers and adults. It has even been proven that just the background noise of a turned-on television disrupts and slows down speech and reading development in children under 5.
• Social-emotional development: In children aged 6 to 18 months, frequent and excessive TV watching is linked to delayed speech development, poorer attention, and a lack of interaction with parents and other children. In the long term, children isolated in front of screens have a significantly higher risk of anxiety, depression, and obesity. It is an alarming fact from the latest studies that today, every third child in Serbia is obese or overweight.

Official Recommendations for Screen Time

Due to the increasing presence of digital content, clear guidelines have been developed:

• Up to 18 months: No screen time (only short video calls with family are allowed).
• 3–7 years: Maximum of 0.5 to 1 hour daily (with high-quality, educational content).
• 7–12 years: 1 hour daily.
• 12–15 years: 1.5 hours daily.
• 16+ years: 2 hours daily for entertainment purposes.

Screens, Nature, and Sleep: A Cycle We Must Not Break

A lack of time spent outdoors and excessive screen use have a devastating effect on a child's sleep. The blue light emitted by phones and tablets directly suppresses the secretion of melatonin, the hormone that signals the body it is time to sleep. Because of this, the brain remains in a state of artificial wakefulness and stress.

When children spend most of their day indoors and their hands are occupied with smart devices in the evening, their biological rhythm is completely disrupted. This makes falling asleep difficult and leads to shallow, interrupted sleep. The consequences of chronic fatigue include a lack of concentration in class, impulsivity, irritability, and a drop in immunity.

How Much Sleep is Really Needed?

The need for sleep changes with age. According to official recommendations:

• 1–2 years: 11–14 hours
• 3–5 years (kindergarten): 10–13 hours
• 6–12 years (school children): 9–12 hours of quality sleep
• Teenagers: 8–10 hours every night

The "digital blackout" rule: All devices should be completely turned off and removed from the child's room at least one to two hours before bedtime. Replace this screen time with reading a book or having a relaxed conversation about how their day went.

Do not leave the health of your youngest to chance. Visit us at Polyclinic Primea, where we will care for your little ones' health together, monitor their growth and development, and carefully plan their carefree and strong path of growing up.