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相关概念视频

Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
Introduction to Epidemiology01:26

Introduction to Epidemiology

Epidemiology, known as the cornerstone of public health, involves studying the distribution and determinants of health-related events in defined populations and applying these insights to control health issues. This is essential for understanding how diseases spread, identifying populations at greater risk, and implementing measures to control or prevent outbreaks. Epidemiology addresses not only infectious diseases but also non-communicable conditions like cancer and cardiovascular disease,...
Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
Cancer Survival Analysis01:21

Cancer Survival Analysis

Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...

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相关实验视频

Updated: Jul 13, 2026

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats
09:36

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats

Published on: October 16, 2010

摄入水果和蔬菜和乳腺癌风险:对队列研究的综合分析.

S A Smith-Warner1, D Spiegelman, S S Yaun

  • 1Department of Nutrition, Harvard School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA.

JAMA
|February 15, 2001
PubMed
概括

这项研究发现,吃水果和蔬菜与降低患乳腺癌的风险之间没有显著的联系. 成年人摄入水果和蔬菜似乎没有降低乳腺癌发病率.

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Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro
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Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro

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Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer

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相关实验视频

Last Updated: Jul 13, 2026

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats
09:36

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats

Published on: October 16, 2010

Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro
12:00

Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro

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科学领域:

  • 营养科学 营养科学
  • 流行病学 流行病学
  • 在瘤学瘤学.

背景情况:

  • 以前的研究表明,水果和蔬菜摄入量可能会降低乳腺癌风险.
  • 然而,这些往往是具有潜在偏差的病例控制研究.
  • 公布偏见也可能影响特定食品组的发现.

研究的目的:

  • 为了研究乳腺癌和水果/蔬菜消费之间的联系.
  • 利用了饮食暴露的标准化定义.
  • 检查了水果和蔬菜组的总和特定摄入量.

主要方法:

  • 包括8项前性研究,每项涉及200多例乳腺癌病例.
  • 评估通常的饮食摄入量,并使用经过验证的饮食评估方法.
  • 使用随机效应模型组合研究特定的相对风险.

主要成果:

  • 分析了351,825名妇女的数据,其中包括7,377例侵袭性乳腺癌病例.
  • 对于水果总量,蔬菜总量和综合摄入量,发现了微弱,无意义的关联.
  • 对于特定的水果和蔬菜子组,没有观察到任何显著的关联.

结论:

  • 成人的水果和蔬菜消费与乳腺癌风险的降低没有显著关联.
  • 研究结果表明,目前的饮食建议可能需要重新评估乳腺癌预防.
  • 进一步的研究可能会探索其他饮食模式或生活方式因素.