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Home > Health Conditions > Respiratory Tract Infection

Respiratory Tract Infections

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  • Vitamin D reduces respiratory infections - Science Daily, 11/16/16 - "could help reduce one of the leading causes of serious illness, debilitation and death among patients in nursing homes and other long-term care facilities ... Vitamin D can improve the immune system's ability to fight infections because it bolsters the first line of defense of the immune system ... 55 received high doses of vitamin D or 100,000 units monthly (averaging 3,300-4,300 units daily). And 52 received lower doses averaging between 400-1,000 units daily. Those with higher doses saw ARIs cut nearly in half. They also had over double the incidence of falls ... This is a potentially life-saving discovery ... here is very little in a doctor's arsenal to battle ARI, especially since most are viral infections where antibiotics don't work. But vitamin D seems able to potentially prevent these infections" - See vitamin D at Amazon.com.
  • Garlic Lowers Blood Pressure in Hypertensive Individuals, Regulates Serum Cholesterol, and Stimulates Immunity: An Updated Meta-analysis and Review - J Nutr. 2016 Jan 13 - "Our updated meta-analysis on the effect of garlic on blood pressure, which included 20 trials with 970 participants, showed a mean ± SE decrease in systolic blood pressure (SBP) of 5.1 ± 2.2 mm Hg (P < 0.001) and a mean ± SE decrease in diastolic blood pressure (DBP) of 2.5 ± 1.6 mm Hg (P < 0.002) compared with placebo. Subgroup analysis of trials in hypertensive subjects (SBP/DBP ≥140/90 mm Hg) at baseline revealed a larger significant reduction in SBP of 8.7 ± 2.2 mm Hg (P < 0.001; n = 10) and in DBP of 6.1 ± 1.3 mm Hg (P < 0.001; n = 6). A previously published meta-analysis on the effect of garlic on blood lipids, which included 39 primary RCTs and 2300 adults treated for a minimum of 2 wk, suggested garlic to be effective in reducing total and LDL cholesterol by 10% if taken for >2 mo by individuals with slightly elevated concentrations [e.g., total cholesterol >200 mg/dL (>5.5 mmol/L)]. Garlic has immunomodulating effects by increasing macrophage activity, natural killer cells, and the production of T and B cells. Clinical trials have shown garlic to significantly reduce the number, duration, and severity of upper respiratory infections" - See garlic supplements at Amazon.com.
  • Probiotics and vitamin C for the prevention of respiratory tract infections in children attending preschool: a randomised controlled pilot study - Eur J Clin Nutr. 2014 Sep 10 - "children aged 3-6 years, 57 received 1.25 × 1010 colony-forming units of Lactobacillus acidophilus CUL21 (NCIMB 30156), Lactobacillus acidophilus CUL60 (NCIMB 30157), Bifidobacterium bifidum CUL20 (NCIMB 30153) and Bifidobacterium animalis subsp. lactis CUL34 (NCIMB 30172) plus 50 mg vitamin C or a placebo daily for 6 months.Results:Significant reductions in the incidence rate of upper respiratory tract infection (URTI; 33%, P=0.002), the number of days with URTI symptoms (mean difference: -21.0, 95% confidence interval (CI):-35.9, -6.0, P=0.006) and the incidence rate of absence from preschool (30%, P=0.007) were observed in the active group compared with the placebo. The number of days of use of antibiotics, painkillers, cough medicine or nasal sprays was lower in the active group and reached significance for use of cough medicine (mean difference: -6.6, 95% CI: -12.9, -0.3, P=0.040)" - [Nutra USA] - See probiotic products at Amazon.com and vitamin C products at Amazon.com.
  • Associations Between Vitamin D and Self-Reported Respiratory Disease in Older People from a Nationally Representative Population Survey - J Am Geriatr Soc. 2013 May 6 - "Health Survey for England 2005 ... Low serum 25(OH)D concentrations are associated with respiratory disease. Ensuring adequate 25(OH)D levels is of public health importance for older populations living in northern latitudes and may be an effective way to prevent concurrent respiratory infections and related complications in older people" - See vitamin D at Amazon.com.
  • Vitamin D can help infection-prone patients avoid respiratory tract infection - Science Daily, 12/13/12 - "researchers examined whether treatment with vitamin D can prevent and relieve respiratory tract infections in particularly infection-prone patients. All the 140 participants from the Immunodeficiency Unit had symptoms of disease in their respiratory tracts for at least 42 days prior to the study. The patients were randomly divided into two groups, one of which received vitamin D in relatively high doses, the other a placebo. They were also asked to keep a diary recording their state of health every day during the year-long study period ... The results show that symptoms of respiratory tract infection declined by almost a quarter and the use of antibiotics by almost half. Vitamin D treatment was also tolerated well by all patients and gave no serious side-effects" - See vitamin D at Amazon.com.
  • Effect of Lactobacillus rhamnosus LGG® and Bifidobacterium animalis ssp. lactis BB-12® on health-related quality of life in college students affected by upper respiratory infections - Br J Nutr. 2012 Oct 1:1-9 - "College students are susceptible to upper respiratory infections (URI) due to inadequate sleep, stress and close living quarters. Certain probiotic strains modulate immune function and may improve health-related quality of life (HRQL) during URI ... randomised to receive placebo (n 117) or probiotic-containing powder (daily dose of minimum 1 billion colony-forming units of each Lactobacillus rhamnosus LGG® (LGG®) and Bifidobacterium animalis ssp. lactis BB-12® (BB-12®); n 114) for 12 weeks ... The median duration of URI was significantly shorter by 2 d and median severity score was significantly lower by 34 % with probiotics v. placebo (P < 0.001), indicating a higher HRQL during URI. Number of missed work days was not different between groups (P = 0.429); however, the probiotics group missed significantly fewer school days (mean difference = 0.2 d) compared to the placebo group (P = 0.002). LGG® and BB-12® may be beneficial among college students with URI for mitigating decrements in HRQL" - See probiotic products at Amazon.com.
  • Vitamin d, respiratory infections, and asthma - Curr Allergy Asthma Rep. 2009 Jan;9(1):81-7 - "Emerging evidence indicates that vitamin D-mediated innate immunity, particularly through enhanced expression of the human cathelicidin antimicrobial peptide (hCAP-18), is important in host defenses against respiratory tract pathogens. Observational studies suggest that vitamin D deficiency increases risk of respiratory infections. This increased risk may contribute to incident wheezing illness in children and adults and cause asthma exacerbations. Although unproven, the increased risk of specific respiratory infections in susceptible hosts may contribute to some cases of incident asthma. Vitamin D also modulates regulatory T-cell function and interleukin-10 production, which may increase the therapeutic response to glucocorticoids in steroid-resistant asthma" - See vitamin D at Amazon.com.

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