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相关概念视频

Optimal Foraging00:48

Optimal Foraging

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How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
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Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
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Lifestyle factors play a critical role in maintaining overall health and preventing chronic diseases. Key elements, such as regular physical activity, a nutritious diet, and abstinence from smoking, can significantly enhance physical, mental, and emotional well-being while reducing the risk of several life-threatening conditions.
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The human body gets energy from the three macronutrients: carbohydrates, proteins, and fats. Energy is released when the chemical bonds in the organic compounds present in the food are broken down. The energy content of food is measured in kilocalories (kcal), defined as the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius. This value is determined by measuring the temperature change of the water surrounding a calorimeter after the complete...
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Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
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相关实验视频

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Iterative Development of an Innovative Smartphone-Based Dietary Assessment Tool: Traqq
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探索丹麦成年人的健康和气候友好饮食:使用二次编程的优化研究.

Matilda Nordman1, Anne Dahl Lassen1, Anders Stockmarr2

  • 1National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark.

Frontiers in nutrition
|July 3, 2023
PubMed
概括

这项研究优化了丹麦成年人的饮食,以营养充足和健康,实现温室气体排放 (GHGE) 减少,与丰富植物的指南相似. 由此产生的饮食与平均丹麦人的饮食非常相似,可能有助于可持续的食物选择.

关键词:
饮食优化 饮食优化饮食指南 饮食指南通过饮食摄入的摄入量温室气体排放的温室气体排放量四位数编程 (QP) 是一种二次编程.可持续的饮食 可持续的饮食

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科学领域:

  • 饮食科学 饮食科学
  • 营养流行病学 营养流行病学
  • 环境科学环境科学

背景情况:

  • 健康和可持续的饮食对人类和地球的健康至关重要.
  • 饮食必须平衡营养需求,健康结果,环境影响和消费者接受.
  • 丹麦富含植物的饮食为健康和可持续的基于食物的饮食指南 (FBDGs) 提供了一个基准.

研究的目的:

  • 为丹麦成年人提供营养充足和健康的饮食.
  • 为了尽量减少与平均观察到的丹麦饮食的偏差.
  • 实现31%的温室气体排放 (GHGE) 减少,与丹麦富含植物的饮食水平相匹配.

主要方法:

  • 通过二次编程使用了四种饮食优化模型.
  • 模型包括营养素,健康目标和GHGE的限制.
  • 目标功能尽量减少与丹麦成年人平均饮食的偏差.

主要成果:

  • 优化的饮食实现了3.013.93公斤CO2-eq的GHGE水平,而观察到的饮食中的CO2-eq为4.37公斤.
  • 来自动物性食品的能量比例从34% (观察) 降至2125% (优化).
  • 优化的NutriHealthGHGE饮食显示,与丹麦富含植物的饮食 (169%) 相比,与平均丹麦饮食的偏差 (38%) 显著较小.

结论:

  • 优化的饮食可以在营养上充足,健康和环境可持续,与气候友好型FBDGs保持一致.
  • 这种优化的饮食提供了一个对消费者可能更容易接受的替代方案.
  • 它可以促进人口向更健康,更可持续的饮食模式过渡.