Fasting Diet Protocol for Chemotherapy Cell Protection
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Solution Overview
Problem
Current chemotherapy treatments for cancer are limited by toxic side-effects on normal cells, which restrict the dose intensity, frequency, and efficacy due to cardiotoxicity and nephrotoxicity associated with drugs like doxorubicin and cisplatin, necessitating a method to selectively protect normal cells while maintaining cancer cell killing.
Innovation Solution
A short-term modified diet protocol that includes a first diet providing at most 50% of normal caloric intake with at least 50% from fat, followed by a second diet of at most 500 kcal/day, and a third diet for weight regain and nutrient replenishment, sensitizes cancer cells to chemotherapy and radiation therapy while protecting normal cells, without causing chronic weight loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-dose chemotherapy is administered to kill cancer cells, then cancer cell killing efficacy is improved, but toxic side-effects on normal cells worsen
Solution Approach 1:
The patent applies preliminary action by implementing a fasting protocol before chemotherapy administration. The fasting state is induced in advance to prepare normal cells for protective mechanisms, allowing subsequent high-dose chemotherapy to be better tolerated. This pre-conditioning approach enables the system to withstand the intended harmful effect while maintaining therapeutic efficacy.
Solution Approach 2:
The patent converts the harmful effect of fasting (caloric deprivation) into a beneficial protective mechanism. The stress response induced by fasting activates cellular pathways that protect normal cells from chemotherapy toxicity. The harmful fasting condition is transformed into a beneficial pre-condition that enhances normal cell resilience against subsequent chemical stress.
2Productivity
If chemotherapy dose intensity is increased to improve treatment efficacy, then cancer treatment outcomes are improved, but cardiotoxicity and nephrotoxicity worsen
Solution Approach 1:
The fasting protocol is implemented as a preliminary action before chemotherapy administration. This pre-conditioning of normal cells through fasting activates protective stress response pathways, enabling the system to tolerate higher chemotherapy doses without excessive organ toxicity. The preliminary fasting state prepares the biological system for the subsequent chemical stress.
Solution Approach 2:
The patent changes the physiological parameter of caloric intake by implementing fasting. This parameter change (from fed to fasted state) triggers a cascade of cellular adaptations including activation of stress response pathways, autophagy, and metabolic reprogramming. These parameter changes in normal cells create a protective state that allows higher chemotherapy doses to be administered with reduced organ toxicity.
3Productivity
If long-term calorie restriction is implemented to delay cancer growth, then cancer progression is delayed, but patient weight loss and nutritional status worsen
Solution Approach 1:
The patent implements periodic action by using short-term fasting cycles rather than continuous long-term calorie restriction. The fasting is applied in discrete intervals (e.g., 24-48 hours) before chemotherapy administrations, allowing normal cells to experience protective stress while cancer cells are targeted. This periodic approach prevents chronic weight loss while maintaining the beneficial effects of fasting on cancer growth delay and chemotherapy tolerance.
Data Source
AI summary
The present invention relates to methods of protecting patients and sensitizing cancer cells in combination with chemotherapy and/or radiation therapy. More specifically, the invention provides nutritional methods and formulations that are capable of reducing cancer growth without causing chronic weight loss in patients, protecting normal cells, tissues and organs from chemotherapy and/radiation therapy, and sensitizing cancer cells against low, normal and high-dose chemotherapy. Some of the methods also impede cancer growth even without chemotherapy.