对2025-2030年美国人饮食指南的批判性评估
Annalisa Giosuè1, Marilena Vitale1, Gabriele Riccardi1
1Nutrition, Diabetes and Metabolism Unit, Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy.
Nutrition, metabolism, and cardiovascular diseases : NMCD
|February 19, 2026
概括
美国人的2025-2030年饮食指南 (DGA) 显示了一些改进,但存在显著的弱点. 关键问题包括不合理的蛋白质建议和忽视环境影响,与植物性饮食的确立科学证据形成鲜明对比.
科学领域:
- 营养科学 营养科学
- 公共卫生政策 公共卫生政策
- 饮食建议 饮食建议
背景情况:
- 美国人饮食指南 (DGA) 是具有影响力的政策文件.
- 他们塑造了国家饮食建议,食品生产和全球营养标准.
- 对于基于证据的公共卫生,批判性评估是必不可少的.
研究的目的:
- 对2025-2030年美国人饮食指南 (DGA) 进行批判性评估.
- 评估DGA与当前科学证据和公共卫生目标的协调程度.
- 确定DGA最新推中的优点和弱点.
主要方法:
- 对2025-2030年DGA进行批判性评估.
- 与现有的科学文献和科学学会和世卫组织的建议进行比较.
- 对饮食模式,营养摄入量和健康结果的证据的一致性分析.
主要成果:
- DGA在某些领域保持一致性,但提出了有关建议.
- 强调限制超加工食品 (UPF) 和含糖饮料是一个积极的创新.
- 担忧包括不合理的蛋白质建议,忽视红肉风险和不一致的脂肪来源建议.
- 这些指导方针淡化了全谷物,忽视了食物选择对环境的影响.
- 基于植物的饮食模式,如地中海饮食,显示了健康益处的有力证据,这是不太强调的.
结论:
- 与科学协会和世卫组织的指导方针相比,2025-2030年DGA的弱点多于优点.
- 这些指导方针需要进行重大修订,以与强有力的科学证据和公共卫生优先事项保持一致.
- 未来的DGA应纳入环境可持续性,并优先考虑基于证据的饮食模式.
相关概念视频
01:23Dietary Connections
62.5K
In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used...
62.5K
01:30Regulation of Food Intake
2.9K
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...
2.9K
01:28Proteins: Dietary Sources and Requirements
1.8K
Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
1.8K
01:18Lipids: Dietary Sources and Requirements
2.3K
Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ...
2.3K
02:59Cancer Prevention
8.2K
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...
Some...
8.2K
01:15Carbohydrates: Dietary Sources and Requirements
1.9K
Carbohydrates are predominantly obtained from plant sources. With the exception of lactose found in milk and insignificant glycogen amounts in meat, most consumed carbohydrates have plant origins. Monosaccharides and disaccharides, or sugars, can be sourced from fruits, honey, milk, sugar cane, and sugar beets. Grains and vegetables are rich in the polysaccharide starch. Two types of polysaccharides provide fiber: cellulose, which is abundant in many vegetables, forms undigestible roughage or...
1.9K