Food Nutritional Balance
Summary
Food nutritional balance refers to the provision, through habitual diet, of all required macro- and micronutrients in proportions that sustain growth, health and resilience to disease. A balanced intake ensures adequate energy from carbohydrates, proteins and fats while optimising sources of fibre, essential fatty acids, vitamins and minerals. Diversity across plant- and animal-based foods underpins micronutrient adequacy and supports the gut microbiome. Dietary patterns rich in whole grains, legumes, fruits, vegetables, lean proteins and low-fat dairy promote metabolic homeostasis and reduce the risk of chronic disorders. Conversely, excess simple sugars, saturated fats, sodium and energy-dense processed foods disrupt physiological regulation, leading to weight gain, dyslipidaemia, hypertension and impaired glucose control. In practice, achieving nutritional balance involves tailoring portion sizes, food‐group variety and fortification strategies to individual requirements—varying with age, sex, activity level and life-stage—to maintain optimal body composition, immune function and long-term well-being.
Research from Nature Portfolio
Recent work has used plasma lipid profiling to refine our understanding of dietary fat quality in relation to health outcomes. In a large cohort, higher circulating n-3 and n-6 polyunsaturated fatty acids were associated with substantially lower risk of hepatocellular carcinoma and chronic liver–disease mortality, whereas elevated saturated fatty acids predicted three- to six-fold increased risk. Complementary analyses in another population have shown that individuals in the highest quintiles of whole-grain and dietary-fibre intake experienced a 22–31 % reduction in liver-cancer incidence and a greater than 50 % decrease in chronic liver-disease deaths. Together, these studies underscore that optimal nutritional balance embraces both the absolute amounts and the relative proportions of macronutrient subtypes and supports the protective power of fibre-rich cereals.
Food Nutritional Balance publication trend
The graph below shows the total number of articles in food nutritional balance across all publications each year (not limited to Nature Index journals).
Technical terms
Macronutrients: Dietary constituents (carbohydrates, proteins, fats) required in gram-level quantities to provide energy and structural materials.
Micronutrients: Vitamins and minerals needed in milligram or microgram amounts to support enzymatic functions, immunity and cellular integrity.
Bioavailability: The proportion of an ingested nutrient that is absorbed and available for metabolic use.
Fortification: The addition of nutrients to processed foods to correct or prevent deficiencies in a population.
Biofortification: The enhancement of nutrient levels in crops through breeding, biotechnology or agronomy to deliver higher intrinsic micronutrient content.
References
- Circulating fatty acids and risk of hepatocellular carcinoma and chronic liver disease mortality in the UK Biobank. Nature Communications (2024).
- Higher intake of whole grains and dietary fiber are associated with lower risk of liver cancer and chronic liver disease mortality. Nature Communications (2021).
- Comparison Study of Iron Bioaccessibility from Dietary Supplements and Microencapsulated Preparations. Nutrients (2019).
- Fighting Iron-Deficiency Anemia: Innovations in Food Fortificants and Biofortification Strategies. Foods (2020).
- Effectiveness of Dietary Interventions to Treat Iron-Deficiency Anemia in Women: A Systematic Review of Randomized Controlled Trials. Nutrients (2022).
About these summaries
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