Nutrition, Food and Diet in Health and Longevity: We Eat What We Are

Abstract

• Nutrition consists of macro- and micro-nutrients essential for survival.
• Cultural factors influence taste, preferences, taboos, and practices around food.
• Food is a foundational pillar of health, alongside physical exercise and socio-mental engagement.
• The article explores the importance of macro- and micro-nutrients, dietary patterns, and the need for refined research approaches.

Introduction

• Terms nutrition, food, and diet are often confused but distinct.
• Food consumption is influenced by cultural and geopolitical factors.
• Historical shift from agriculture to processed foods impacts health and lifespan.
• The article aims to discuss nutrition’s role in health and aging.

Nutrition for Healthy Ageing

• Nutrition science is advanced with comprehensive resources available.
• Macronutrients: proteins, carbohydrates, and lipids.
• Micronutrients: 18 minerals and vitamins vital for biochemical processes.
• Challenges in ageing: nutritional deficiency due to metabolic decline and medication interactions.
• Older adults have unique nutritional needs due to lower bioavailability and reduced appetite.
• Nutrigenomics and nutrigenetics explore nutrient impact on gene expression and genetic variation.

Food for Healthy Ageing

• Healthy ageing: maintaining health and independence in old age.
• No universal "ideal" food for health and longevity.
• Cooking practices affect nutrient bioavailability and toxicity mitigation.
• Phytochemicals used as spices have hormesis effects: low doses induce stress responses for health benefits.
• Industry focus on nutraceuticals and functional foods, but scientific understanding is still evolving.

Diet and Culture for Healthy and Long Life

• Diet elevated by the context and method of consumption.
• Cultural diets: paleo, ketogenic, Mediterranean, kosher, vegan, etc.
• "Chrono-nutrition" and nutrient timing affect health outcomes.
• Cultural history and practices are critical for dietary health preservation.
• People eat according to their identity and cultural background.

Conclusions and Perspectives

• Food is a primary pillar of health, influencing metabolic pathways for aging.
• Diet-based interventions like caloric restriction and intermittent fasting show promise for longevity.
• TRE aligns eating with circadian rhythms, benefiting metabolic health.
• Global disparities in food access impact health outcomes.
• Continued research needed on the biochemical, physiological, and cultural dimensions of nutrition.

Author Contributions

• Both authors contributed equally to the paper.

Funding Statement

• Funded by the Department of Science & Technology, Government of India.

Conflicts of Interest

• None declared.