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Related Concept Videos

Dietary Connections01:23

Dietary Connections

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 as energy sources to produce...
Optimal Foraging00:48

Optimal Foraging

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.
Microbial Nutrition01:28

Microbial Nutrition

Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

Parentral Nutrition: Centeral and Peripheral Parental Nutrition

Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...
Self-Schemas02:16

Self-Schemas

In general, a schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.

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Related Experiment Video

Updated: Jun 22, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Nutritional geometry provides food for thought.

C Ruth Archer1, Nick Royle, Sandra South

  • 1Centre for Ecology and Conservation, School of Biosciences, University of Exeter, Cornwall Campus, Penryn TR10 9EZ, UK.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|June 9, 2009
PubMed
Summary

Dietary restriction extends lifespan but can harm reproduction. Nutritional Geometry, applied to insect studies, offers new insights into how specific nutrient or calorie restriction impacts lifespan and reproductive fitness.

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Control of Eating Behavior Using a Novel Feedback System
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Control of Eating Behavior Using a Novel Feedback System

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Last Updated: Jun 22, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Control of Eating Behavior Using a Novel Feedback System
04:48

Control of Eating Behavior Using a Novel Feedback System

Published on: May 8, 2018

Area of Science:

  • Nutritional science
  • Animal physiology
  • Insect biology

Background:

  • Dietary restriction (DR) is known to extend lifespan across many species.
  • However, DR often negatively impacts reproductive capacity.
  • The specific nutrient or caloric components driving these trade-offs remain unclear.

Purpose of the Study:

  • To investigate the effects of dietary restriction on lifespan and reproduction.
  • To elucidate whether specific nutrient or calorie restriction underlies the observed trade-offs.
  • To explore the utility of Nutritional Geometry in understanding these relationships.

Main Methods:

  • Application of Nutritional Geometry principles to insect models.
  • Analysis of two recent insect studies employing this technique.
  • Examination of how nutrition influences key life history traits.

Main Results:

  • Nutritional Geometry provides a framework to dissect complex nutrient-trait relationships.
  • Recent insect studies offer novel data on the DR-reproduction trade-off.
  • The approach highlights the importance of specific nutrient balances.

Conclusions:

  • Nutritional Geometry is a powerful tool for understanding nutrition's impact on longevity and reproduction.
  • Further research using this technique can clarify the mechanisms behind DR-induced trade-offs.
  • This approach promises significant advancements in nutritional science.