Related Experiment Video
Updated: Mar 20, 2026
07:34
Manipulation of Rhythmic Food Intake in Mice Using a Custom-Made Feeding System
Published on: December 16, 2022
3.0K
Nutrition and the circadian system.
Gregory D M Potter1, Janet E Cade2, Peter J Grant3
11LIGHT Laboratories,Division of Epidemiology and Biostatistics,University of Leeds,LeedsLS2 9JT,UK.
The British Journal of Nutrition
|May 26, 2016
Summary
The body's internal clock, or circadian system, uses light and food cues to optimize daily functions. Eating at the wrong times, especially high-fat diets, disrupts this system, potentially leading to metabolic diseases.
Area of Science:
- Chronobiology
- Nutritional Science
- Metabolic Health
Background:
- The human circadian system, regulated by the master clock in the suprachiasmatic nuclei (SCN), optimizes behavior and physiological processes.
- Light-dark cycles synchronize the SCN, while feeding-fasting cycles are key time cues for peripheral clocks.
- Misaligned feeding patterns disrupt circadian organization, potentially contributing to metabolic diseases.
Purpose of the Study:
- To explore the impact of feeding/fasting cycles on circadian system organization and metabolic health.
- To investigate the adverse effects of high-fat diets (HFD) on circadian rhythms.
- To assess the potential of time-of-day-restricted feeding to mitigate HFD-induced disruptions.
Main Methods:
- Review of existing literature on circadian rhythms, feeding patterns, and metabolic health.
- Analysis of rodent studies on the effects of HFD and time-restricted feeding.
- Consideration of nutritional compounds like caffeine and their influence on circadian entrainment.
Main Results:
- High-fat diets disrupt circadian organization in rodents by blunting feeding/fasting cycles.
- Time-of-day-restricted feeding can offset adverse consequences of HFD in animal models.
- Nutritional compounds can influence circadian system synchronization.
Conclusions:
- Aligning feeding schedules with circadian rhythms is crucial for optimizing metabolism.
- Further research is needed to confirm the benefits of time-restricted feeding in humans.
- Understanding the circadian system offers significant implications for nutritional science and chronic disease prevention.
Related Concept Videos
02:19Circadian Rhythms and Gene Regulation
4.7K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.7K
02:19Circadian Rhythms and Gene Regulation
2.5K
2.5K
01:15Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
449
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
449
01:30Regulation of Food Intake
3.1K
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...
3.1K
01:11Understanding Sleep
1.8K
Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
1.8K
02:45Biological Clocks and Seasonal Responses
42.0K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
42.0K