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Short-term fasting and fasting mimicking diets combined with chemotherapy: a narrative review.

ABSTRACT: Many patients with cancer search for and use alternative and complementary treatments, aiming to improve the effectiveness of their anticancer treatment and a reduction in treatment-associated side effects. Short-term fasting (STF) and fasting mimicking diets (FMDs) are among the most commonly used dietary interventions. In recent years, different trials have reported the promising results of dietary interventions in combination with chemotherapy, in terms of slowing down tumor growth and reduction in chemotherapy-related side effects. In this narrative review, we identify and describe the current evidence about feasibility and effects of STF and FMDs in cancer patients receiving chemotherapy. The studies that examined the effects of STF when combined with chemotherapy suggest potential benefits regarding reduction in side effects and improved quality of life. We also conclude with a list of well-designed studies that are still recruiting patients, examining the long-term effects of STF.

SUBMITTER: Kikomeko J

PROVIDER: S-EPMC10037739 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Short-term fasting and fasting mimicking diets combined with chemotherapy: a narrative review.

Kikomeko Joachim J Schutte Tim T van Velzen Merel J M MJM Seefat Rianne R van Laarhoven Hanneke W M HWM

Therapeutic advances in medical oncology 20230322

Many patients with cancer search for and use alternative and complementary treatments, aiming to improve the effectiveness of their anticancer treatment and a reduction in treatment-associated side effects. Short-term fasting (STF) and fasting mimicking diets (FMDs) are among the most commonly used dietary interventions. In recent years, different trials have reported the promising results of dietary interventions in combination with chemotherapy, in terms of slowing down tumor growth and reduct ...[more]

PMID: 36970110

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Project description:Background: A greater decrease in 24-hour energy expenditure (EE) during fasting and a smaller increase in 24-hour EE during low-protein overfeeding (metabolic "thrifty" phenotype) predict weight gain. As thyroid hormones (TH) are implicated in energy intake and metabolism, we assessed whether: (i) TH concentrations are altered by 24-hour fasting or overfeeding diets with varying protein content and (ii) diet-related changes in TH correlate with concomitant changes in EE. Methods: Fifty-eight euthyroid healthy subjects with normal glucose regulation underwent 24-hour dietary interventions including fasting, eucaloric feeding, and five overfeeding diets in a crossover design within a whole-room indirect calorimeter to measure the 24-hour EE. Overfeeding diets (200% of energy requirements) included three diets with 20% protein, one diet with 3% protein (low-protein overfeeding diet [LPF]: 46% fat), and one diet with 30% protein (high-protein overfeeding diet [HPF]: 44% fat, n = 51). Plasma free thyroxine (fT4), free triiodothyronine (fT3), and fibroblast growth factor 21 (FGF21) concentrations were measured after overnight fast the morning of and after each diet. Results: On average, fT4 increased by 8% (+0.10 ng/dL, 95% confidence interval [CI 0.07-0.13], p < 0.0001) and fT3 decreased by 6% (-0.17 pg/mL [CI -0.27 to -0.07], p = 0.001) after 24-hour fasting, whereas both fT4 and fT3 decreased by 5% (-0.07 ng/dL [CI -0.11 to -0.04], p < 0.0001) and 4% (-0.14 pg/mL [CI -0.24 to -0.04], p = 0.008) following HPF, respectively. Greater decreases in fT3 after HPF are associated with larger decreases in FGF21 (r = 0.40, p = 0.005). Following LPF, the mean fT3 increased by 6% (+0.14 pg/mL [CI 0.05-0.2], p = 0.003) with no change in fT4 (p = 0.7). No changes in TH were observed after normal-protein overfeeding diets (all p > 0.1). No associations were observed between TH concentrations and diet-related changes in 24-hour EE during any diet (all p > 0.07). Conclusions: Acute (200%) short-term (24 hours) changes in food intake induce small changes in TH concentrations only after diets with low (0% fasting and 3% protein overfeeding) or high (30% protein overfeeding) protein content. The fT3-FGF21 association after high-protein overfeeding suggests a role for TH in inhibiting FGF21 secretion by the liver during protein excess. These results indicate that TH are involved in protein metabolism; however, they do not mediate the short-term EE response to diets that characterize the metabolic phenotypes and determine the individual susceptibility to weight gain.

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Short-term fasting and fasting mimicking diets combined with chemotherapy: a narrative review.

Publications

Short-term fasting and fasting mimicking diets combined with chemotherapy: a narrative review.

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