Caloric Restriction: Difference between revisions

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    Caloric restriction (CR), a dietary regimen that reduces calorie intake without incurring malnutrition, has been a subject of scientific study in the context of aging and longevity. This practice is thought to extend lifespan and improve health outcomes in various species, including potentially humans.
    ==Science Behind Caloric Restriction==
    ===Mechanisms===
    Caloric restriction is believed to impact aging through several biological pathways. These include reduced metabolic rate, decreased oxidative stress, improved insulin sensitivity, and activation of cellular maintenance mechanisms such as autophagy.
    ===Research Findings===
    Studies in model organisms, like yeast, worms, flies, and mice, have consistently shown lifespan extension with caloric restriction. Human studies, however, are more complex due to longer lifespans and ethical considerations.
    ==Benefits of Caloric Restriction==
    Research suggests that caloric restriction may offer several health benefits, including:
    *Improved metabolic health
    *Reduced risk of age-related diseases
    *Enhanced brain function and protection against neurodegenerative diseases
    *Possible extension of healthy lifespan
    ==Potential Risks and Concerns==
    Caloric restriction, especially if not properly managed, can lead to:
    *Nutritional deficiencies
    *Loss of bone density
    *Reduced muscle mass and strength
    *Psychological challenges such as food obsession and social isolation
    ==Guidelines for Safe Practice==
    Before starting caloric restriction, it is crucial to consult healthcare professionals. Some general guidelines include:
    *Gradual reduction in calorie intake
    *Emphasis on nutrient-dense foods
    *Regular monitoring of health parameters
    *Adjustment of diet based on individual health needs and lifestyle
    ==Conclusion==
    While caloric restriction shows promise as a tool for extending healthspan and potentially lifespan, further research, especially in humans, is necessary. It is vital to approach this dietary regimen with caution and under medical supervision to avoid adverse effects.
    [[Category:Lifespan Extending]]
    [[Category:Lifespan Extending]]
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    {{Stub}}

    Revision as of 01:04, 7 December 2023

    Caloric restriction (CR), a dietary regimen that reduces calorie intake without incurring malnutrition, has been a subject of scientific study in the context of aging and longevity. This practice is thought to extend lifespan and improve health outcomes in various species, including potentially humans.

    Science Behind Caloric Restriction

    Mechanisms

    Caloric restriction is believed to impact aging through several biological pathways. These include reduced metabolic rate, decreased oxidative stress, improved insulin sensitivity, and activation of cellular maintenance mechanisms such as autophagy.

    Research Findings

    Studies in model organisms, like yeast, worms, flies, and mice, have consistently shown lifespan extension with caloric restriction. Human studies, however, are more complex due to longer lifespans and ethical considerations.

    Benefits of Caloric Restriction

    Research suggests that caloric restriction may offer several health benefits, including:

    • Improved metabolic health
    • Reduced risk of age-related diseases
    • Enhanced brain function and protection against neurodegenerative diseases
    • Possible extension of healthy lifespan

    Potential Risks and Concerns

    Caloric restriction, especially if not properly managed, can lead to:

    • Nutritional deficiencies
    • Loss of bone density
    • Reduced muscle mass and strength
    • Psychological challenges such as food obsession and social isolation

    Guidelines for Safe Practice

    Before starting caloric restriction, it is crucial to consult healthcare professionals. Some general guidelines include:

    • Gradual reduction in calorie intake
    • Emphasis on nutrient-dense foods
    • Regular monitoring of health parameters
    • Adjustment of diet based on individual health needs and lifestyle

    Conclusion

    While caloric restriction shows promise as a tool for extending healthspan and potentially lifespan, further research, especially in humans, is necessary. It is vital to approach this dietary regimen with caution and under medical supervision to avoid adverse effects.

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    • In fact, it has been shown that caloric restriction increases NAD+ bioavailability by activating the expression of NAMPT (nicotinamide phosphoribosyltransferase, which transforms nicotinamide [NAM] to NAD+ in the NAD+ salvage pathway) [1]

    References

    1. Menssen A et al.: The c-MYC oncoprotein, the NAMPT enzyme, the SIRT1-inhibitor DBC1, and the SIRT1 deacetylase form a positive feedback loop. Proc Natl Acad Sci U S A 2012. (PMID 22190494) [PubMed] [DOI] [Full text]