Large differences in COVID‐19 death rates exist between countries and between regions of the same country. Some very low death rate countries such as Eastern Asia, Central Europe or the Balkans have a common feature of eating large quantities of fermented foods. Although biases exist when examining ecological studies, fermented vegetables or cabbage were associated with low death rates in European countries. SARS‐CoV‐2 binds to its receptor, the angiotensin converting enzyme 2 (ACE2). As a result of SARS‐Cov‐2 binding, ACE2 downregulation enhances the angiotensin II receptor type 1 (AT 1 R) axis associated with oxidative stress. This leads to insulin resistanceas well as lung and endothelial damage, two severe outcomes of COVID‐19. The nuclear factor (erythroid‐derived 2)‐like 2 (Nrf2) is the most potent antioxidant in humans and can block the AT 1 R axis. Cabbage contains precursors of sulforaphane, the most active natural activator of Nrf2. Fermented vegetables contain many lactobacilli, which are also potent Nrf2 activators. Three examples are given: Kimchi in Korea, westernized foods and the slum paradox. It is proposed that fermented cabbage is a proof‐of‐concept of dietary manipulations that may enhance Nrf2‐associated antioxidant effects helpful in mitigating COVID‐19 severity.

If there are severe breathing problems related to the septal deviation, septoplasty should be performed. In the majority of cases, septal surgery may be conducted in 6-year-old children. However, if necessary, septal surgery may be performed in younger children and even at birth.

Fungal rhinosinusitis is an important pathological entity, a highly controversial topic in the medical world today, by the various research directions it offers. In order to be able to predict a patient’s prognosis and his response to treatment, first we must have a classification of fungal rhinosinusitis. The authors considered it is important to make a distinction between invasive and noninvasive forms of fungal rhinosinusitis. The most important step in the management of fungal rhinosinusitis is to have a correct diagnosis, based on strong criteria, which will lead to a better prognosis of this disease. Because of its invasiveness potential, especially in patients at risk, it is essential to have a correct and fast diagnosis in case of fungal rhinosinusitis, in order to begin the treatment as fast as possible, for a favourable prognosis. The only way to establish diagnosis in a reliable way is to make a detailed clinical examination and to take biopsy samples.

The aim of this research is to investigate penetration of Bromelain into sinonasal mucosa in patients with chronic rhinosinusitis (CRS) versus a control group. Bromelain is derived from pineapple (Ananas comosus) and has various pharmacological effects. 40 patients (20 patients and 20 controls) were enrolled in the study. Bromelain 500 mg tablet twice daily was administered for 30 days. We scored bromelain presence in turbinate and ethmoid mucosas and in the serum of both the groups. Bromelain has an excellent distribution from blood to rhinosinusal mucosa. Its diffusion ability may allow the use of bromelain as an anti-inflammatory agent in paranasal sinus pathologies.