概括
补充维生素C可以减少普通感冒的严重程度和持续时间,特别是在更高剂量时. 虽然它不能预防普通人群的感冒,但对那些体验过重体力活动的人来说,它是有前途的.
科学领域:
- 营养科学 营养科学
- 免疫学 免疫学 免疫学
- 公共卫生 公共卫生
背景情况:
- 维生素C (酸) 对于免疫功能至关重要.
- 动物研究表明,对感染有保护作用.
- 人类对维生素C治疗呼吸道感染的研究结果各不相同.
研究的目的:
- 审查维生素C在预防和治疗呼吸道感染方面的疗效.
- 分析维生素C剂量和特定人群对感冒和肺炎结果的影响.
主要方法:
- 对受控人体试验和动物研究的系统审查.
- 基于维生素C剂量,人群类型和干预时间 (预防与治疗) 的数据分析.
主要成果:
- 维生素C (≥1g/天) 在一般人群中没有预防感冒,但在那些有重度体力活动的人群中降低了发病率的一半.
- 定期服用维生素C补充剂 (≥1g/天) 可将感冒的严重程度降低15%.
- 较高的治疗剂量 (6-8克/天) 在减少感冒持续时间方面比较低的剂量 (3-4克/天) 更有效.
结论:
- 维生素C可以减少普通感冒的严重程度和持续时间,特别是在较高的治疗剂量下.
- 在一般人群中预防肺炎的证据较弱,但建议有一些治疗益处.
- 针对感冒的高剂量维生素C (6-8克/天) 的个人测试是合理的,因为它的安全性和低成本.
更多相关视频
09:12Characterization of Inflammatory Responses During Intranasal Colonization with Streptococcus pneumoniae
Published on: January 17, 2014
12.4K
11:32Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
Published on: February 23, 2014
15.0K
相关概念视频
Pneumonia V: Nursing management and Prevention
1.8K
Nursing management of pneumonia involves promoting airway patency, facilitating rest and conserving energy, encouraging fluid intake, maintaining nutrition, and educating patients.
The nurse must practice strict medical asepsis and adhere to infection control guidelines to minimize healthcare-associated infections.
Enhance airway patency
Position the patient correctly to facilitate drainage of the affected lung segments. Manual or mechanical percussion and vibration can also be employed....
The nurse must practice strict medical asepsis and adhere to infection control guidelines to minimize healthcare-associated infections.
Enhance airway patency
Position the patient correctly to facilitate drainage of the affected lung segments. Manual or mechanical percussion and vibration can also be employed....
1.8K
Pneumonia III: Complications and Assessment
153
Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
153
Pneumonia IV: Management
297
The treatment of pneumonia varies based on its severity and the causative pathogen. Here is a structured approach to managing pneumonia, integrating pharmaceutical and supportive care strategies.
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
297
Vitamins
551
Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
551
Acute Pharyngitis
407
Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
407
Pneumonia I: Introduction
205
Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
205
