By Dr. Joseph Mercola
STORY AT-A-GLANCE
Keto diets can provide immediate symptom relief and rapid weight loss, but may worsen health in the long run due to the reliance on gluconeogenesis, a less optimal metabolic pathway for producing glucose internally
Low-carb diets fail to improve metabolic flexibility, inducing physiological insulin resistance instead, as they do not address underlying issues with glucose metabolism. Essential body parts, including the brain, muscles during strength training, and various organs, require carbohydrates for optimal functioning, highlighting the inefficiency of forcing the body to produce its own glucose through gluconeogenesis
Relying excessively on gluconeogenesis for glucose production is energetically costly and inefficient, requiring a significant energy investment for a relatively low energy return, and is stimulated by stress hormones, potentially leading to muscle loss over time
Low-carb diets can hinder thyroid function by reducing the liver's ability to convert T4 into the active thyroid hormone T3, essential for regulating metabolism, due to a decrease in glucose availability for the liver
Reintroducing carbohydrates in a balanced manner can improve metabolism and overall health, countering the negative effects of long-term low-carb dieting by enhancing the body's energy production and usage
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