Cancer as a Metabolic Disease
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Cancer's classification as a metabolic disease has gained substantial traction, emphasizing the interplay between genetics and metabolism in tumor formation. Here are some key insights from leading experts:
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Genetic and Metabolic Interplay: Cancer is not solely a genetic disease but is driven by metabolic processes. Therapeutic developments over the past decades have targeted metabolic components of cancer. For instance, the KRAS mutation in lung cancer models demonstrates how metabolic dysregulation can lead to tumor development, highlighting the complex interactions between genetic and metabolic events 1.
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Unique Metabolic Characteristics of Cancer Cells: Cancer cells typically exhibit distinct metabolic behaviors, such as increased glucose uptake and utilization, often due to their internal programming that mimics constant insulin exposure. This metabolic peculiarity is crucial for their uncontrolled growth and proliferation. The connection between metabolism and immunotherapy, such as the role of fiber in promoting immunotherapy effectiveness, is also being explored 2.
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Cancer as a Process: Cancer should be viewed as a process involving multiple factors, including mixed signaling, accumulated toxins, and mitochondrial damage. Dysfunctional mitochondria lose their ability to effectively manage cell death and DNA protection, leading to cancer development. This challenges the traditional view of cancer as merely a genetic disease, emphasizing the significance of metabolic factors 3.
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Insulin and Growth Factors: Elevated insulin and IGF (Insulin-like Growth Factor) levels due to metabolic dysfunctions, like obesity and diabetes, can promote cancer growth. The rising rates of cancer align with increasing obesity and diabetes, underscoring the metabolic link to cancer 4.
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Warburg Effect and Metabolism: The Warburg effect describes how cancer cells preferentially use glycolysis for energy production, even in the presence of oxygen. This shift is believed to support rapid cell growth and division. This metabolic reprogramming is a hallmark of cancer and serves as a basis for potential metabolic therapies 5 6.
These insights collectively highlight how understanding and targeting the metabolic aspects of cancer could open new avenues for treatment and prevention.
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