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Dietary restrictions and cancer
1Division of Biometry and Risk Assessment, National Center for Toxicological Research, Jafferson, Arkansas 72079, USA. rhart@nctr.fda.gov
Environmental Health Perspectives
|June 1, 1997
Summary
Dietary restriction (DR) inhibits cancer development by influencing body weight, temperature, and cellular processes. Understanding these mechanisms can help reduce cancer risks associated with environmental factors.
Area of Science:
- Oncology
- Nutrition Science
- Molecular Biology
Background:
- Dietary intake is a significant environmental factor influencing carcinogenesis.
- Dietary restriction (DR) is known to inhibit both spontaneous and induced tumorigenesis.
Purpose of the Study:
- To elucidate the potential mechanisms by which dietary restriction inhibits cancer.
- To understand how DR modulates the induction of cancer by environmental agents.
Main Methods:
- Review of potential molecular and physiological effects of DR on cancer.
- Analysis of DR's impact on spontaneous and induced carcinogenesis pathways.
Main Results:
- DR may inhibit spontaneous cancer by decreasing body weight, body temperature, oxidative damage, and cellular proliferation, while enhancing DNA repair.
- DR can reduce induced tumor incidence by altering carcinogen activation, disposition, and adduct formation, and by inhibiting tumor progression.
Conclusions:
- Understanding DR's mechanisms provides insights into diet's role in cancer development.
- DR strategies may offer methods to mitigate the adverse effects of environmental agents on cancer incidence.