As autumn transitions into winter, public interest in immune system support increases, while experts emphasize that daily nutritional needs can be met through balanced diets rather than relying solely on excessive vitamin supplementation.
- Dietary Adequacy: Whole foods provide sufficient micronutrients for healthy individuals without the need for concentrated pharmaceutical tablets.
- Renal Clearance: Water-soluble micronutrients like ascorbic acid are filtered by the kidneys when consumed in excess, placing unnecessary filtration strain on renal pathways.
- Biochemical Interference: Megadoses do not confer super-immunity; instead, they saturate cellular absorption sites while triggering predictable adverse gastrointestinal effects.
Internal Medicine Specialist Dr. Özkan Akyol, practicing at Liv Hospital Samsun, said that autumn marks a critical period when ambient sunlight exposure decreases, directly impacting endogenous synthesis pathways, Hürriyet reported.
According to Akyol, maintaining strong physiological defense mechanisms requires a careful balance of micronutrients rather than indiscriminate supplementation. “C vitamini, vücudun doğal savunma mekanizmalarını destekleyerek soğuk algınlığına karşı direnci artırırken; D vitamini, bağışıklık hücrelerinin sağlıklı çalışması için adeta anahtar bir role sahiptir,” Akyol told Hürriyet.
He emphasized that exceeding standard physiological thresholds carries biochemical risks comparable to deficiency states, noting that “fazlası da eksikliği kadar sorun oluşturabilir.”
While public perception often equates high-dose ascorbic acid with rapid recovery from viral pathogens, clinical data presents a more measured picture. Associate Professor Dr. Betül Börkü Uysal outlined the physiological realities of supplementation, pointing out that public enthusiasm frequently clashes with pharmacological evidence, Cumhuriyet reported. “Düzenli C vitamini kullananlarda hastalığa yakalanma riski genel olarak azalmıyor,” Börkü Uysal said.
The human body maintains strict homeostatic control over water-soluble compounds, excreting unabsorbed fractions via urinary output. Börkü Uysal warned that adult requirements sit between 75 and 90 milligrams daily, yet commercial preparations frequently deliver tenfold amounts.
“Vücut ihtiyacından fazlasını kullanamıyor ve büyük kısmı idrarla atılıyor,” she told Cumhuriyet, highlighting that sustained megadoses elevate the clinical risk of nephrolithiasis, particularly in male cohorts. Gastrointestinal side effects including osmotic diarrhea, abdominal cramping, and nausea also accompany excessive oral ingestion.
Public health discourse surrounding seasonal wellness often incorporates contrasting clinical viewpoints regarding administration methods and synergistic biochemical pathways. Professor Dr. Canan Karatay discussed the physiological role of ascorbic acid on her YouTube program, asserting that micronutrient sufficiency directly correlates with leukocyte mobilization and cellular defense, Türkiye Gazetesi reported.
Karatay argued that adequate internal levels support phagocytic white blood cells in identifying and clearing foreign pathogens, stating that “lökositler yani akyuvarlar bizim koruyucu askerlerimizdir,” Türkiye Gazetesi reported.
Preventative strategies remain rooted in foundational lifestyle habits rather than isolated pharmacological agents. Akyol emphasized that adequate sleep hygiene, balanced nutrition, and consistent physical activity form the basis of winter wellness, Hürriyet reported. Ensuring verified micronutrient status through standard laboratory assays enables clinicians to target genuine deficiencies safely, avoiding the pitfalls of unguided megadoses.
- Hürriyet
- Habertürk
- İlke Haber Ajansı
- Cumhuriyet
- Haberton
- Anadolu Ajansı, DHA ve İHA
- Türkiye Gazetesi
