scholarly journals Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis

2021 ◽  
Vol 6 (1) ◽  
pp. e003176
Author(s):  
Ajibola Ibraheem Abioye ◽  
Sabri Bromage ◽  
Wafaie Fawzi
Keyword(s):  
Vitamin D ◽  
Vitamin C ◽  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Vitamin D Supplementation ◽  
Self Report ◽  
Duration Of Symptoms ◽  
Multiple Micronutrient ◽  
Tract Infections ◽  
The Impact

Acute respiratory tract infections (ARIs) are a leading cause of ill-health and death globally. Individual or multiple micronutrients have been shown to modulate immune function and affect the risk and severity of a number of infectious diseases. We systematically reviewed the evidence on the impact of micronutrient supplements to reduce the occurrence of ARIs and shorten the duration of ARI symptoms among adults. Random effects meta-analyses were conducted to estimate the pooled effects of vitamin D, vitamin C, zinc and multiple micronutrient supplementation (MMS) on the occurrence of ARIs and the duration of ARI symptoms. Vitamin D supplementation reduced the risk of ARI (risk ratio (RR)=0.97; 95% CI 0.94 to 1.00; p=0.028) and shortened the duration of symptoms (per cent difference: −6% (95% CI −9% to −2%; p=0.003)). The RR of vitamin D to prevent ARI was farther from the null when diagnosis was based on clinical diagnosis or laboratory testing, compared with self-report and when the loading dose was <60 000 IU. Vitamin C supplementation reduced the risk of ARIs (RR=0.96; 95% CI 0.93 to 0.99; p=0.01) and shortened the duration of symptoms (per cent difference: −9% (95% CI −16% to −2%; p=0.014)). The effect of vitamin C on preventing ARI was stronger among men and in middle-income countries, compared with women and high-income countries, respectively. Zinc supplementation did not reduce the risk of ARIs but shortened the duration of symptoms substantially (per cent difference: −47% (95% CI −73% to −21%; p=0.0004)). Our synthesis of global evidence from randomised controlled trials indicates that micronutrient supplements including zinc, vitamins C and D, and multiple micronutrient supplements may be modestly effective in preventing ARIs and improving their clinical course. Further research is warranted to better understand the effectiveness that individual or multiple micronutrients have on SARS-CoV-2 infection and treatment outcomes.

scholarly journals Burden of disease in children with respiratory tract infections in primary care: diary-based cohort study

2019 ◽  
Vol 36 (6) ◽  
pp. 723-729
Author(s):  
M J C Schot ◽  
A R J Dekker ◽  
C H van Werkhoven ◽  
A W van der Velden ◽  
J W L Cals ◽  
...  
Keyword(s):  
Primary Care ◽  
Respiratory Tract ◽  
Family Life ◽  
Burden Of Disease ◽  
Respiratory Tract Infections ◽  
Health Care Facilities ◽  
Duration Of Symptoms ◽  
Disturbed Sleep ◽  
Tract Infections ◽  
The Impact

Abstract Background Respiratory tract infections (RTIs) are a common reason for children to consult in general practice. Antibiotics are often prescribed, in part due to miscommunication between parents and GPs. The duration of specific respiratory symptoms has been widely studied. Less is known about illness-related symptoms and the impact of these symptoms on family life, including parental production loss. Better understanding of the natural course of illness-related symptoms in RTI in children and impact on family life may improve GP–parent communication during RTI consultations. Objective To describe the general impact of RTI on children and parents regarding illness-related symptoms, absenteeism from childcare, school and work, use of health care facilities, and the use of over-the-counter (OTC) medication. Methods Prospectively collected diary data from two randomized clinical trials in children with RTI in primary care (n = 149). Duration of symptoms was analysed using survival analysis. Results Disturbed sleep, decreased intake of food and/or fluid, feeling ill and/or disturbance at play or other daily activities are very common during RTI episodes, with disturbed sleep lasting longest. Fifty-two percent of the children were absent for one or more days from childcare or school, and 28% of mothers and 20% of fathers reported absence from work the first week after GP consultation. Re-consultation occurred in 48% of the children. OTC medication was given frequently, particularly paracetamol and nasal sprays. Conclusion Appreciation of, and communication about the general burden of disease on children and their parents, may improve understanding between GPs and parents consulting with their child.

scholarly journals Respiratory Tract Infections and Antibiotic Resistance: A Protective Role for Vitamin D?

2021 ◽  
Vol 8 ◽  
Author(s):  
Emma J. Derbyshire ◽  
Philip C. Calder
Keyword(s):  
Vitamin D ◽  
Respiratory Tract ◽  
Bacterial Infections ◽  
Respiratory Tract Infections ◽  
Current Knowledge ◽  
Protective Role ◽  
Vitamin D Supplementation ◽  
Antibiotic Overuse ◽  
The United Kingdom ◽  
Tract Infections

Upper and lower respiratory tract infections are among the most common infections globally, and in the United Kingdom, they account for about half of all oral antibiotics prescribed. Antibiotic overuse and the emergence of “superbugs” that are resistant to their effects is a global problem that is becoming a serious concern. Considering this, the potential role of immunonutrition as a “prehabilitation” in helping to tackle bacterial infections and reduce over-reliance on antibiotic usage is gaining interest. This narrative mini-review summarizes current knowledge on the roles of certain nutrients in helping to modulate immune function, with particular focus on vitamin D. Vitamin D supplementation appears to reduce the risk of acute respiratory tract infections and thus could have a valuable role to play in reducing over-reliance on antibiotics. Investment in high-quality trials is needed to further explore this field.

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