Key Takeaways
- Obesity is strongly linked to insulin resistance, a condition in which cells lose their ability to properly remove glucose from the bloodstream.
- Reduced AMPK activity is a key metabolic driver of obesity. When AMPK declines, the body becomes less efficient at burning stored fat.
- Obesity is also a chronic inflammatory condition that can accelerate aging by increasing the number of senescent cells in the body.
- Many weight-loss drugs reduce appetite, but some of the weight loss may come from lean body mass rather than body fat.
- Metabolic Engineering® focuses on improving metabolism at the cellular level by activating AMPK and increasing fat oxidation.
- The three dietary pillars of Metabolic Engineering®—the Zone Diet, omega-3 fatty acids, and polyphenols—work together to improve metabolic efficiency.
What Causes Obesity?
Obesity has become a worldwide epidemic and is often the first visible sign that metabolism is no longer working efficiently.
Excess body fat is closely associated with rising insulin resistance, a metabolic condition in which cells lose their ability to properly remove glucose from the bloodstream. However, obesity does not tell the whole story. Research indicates that about 16% of individuals with normal body weight also have severe insulin resistance (1).
Obesity is also more than simply storing excess calories. It is considered a chronic inflammatory condition that accelerates metabolic dysfunction. Excess body fat increases the production of senescent cells, which are damaged cells that no longer function properly and contribute to the aging process (2).
The Metabolic Mechanism Behind Obesity
At the cellular level, the physiological foundation of obesity is insulin resistance caused by decreased activity of AMPK (AMP-activated protein kinase) (3, 4).
AMPK is a critical regulator of metabolism. When AMPK activity declines:
- The body becomes less efficient at burning stored fat
- Fat accumulation increases in multiple organs
- Insulin resistance worsens
Reduced AMPK activity also affects many other metabolic systems. It can weaken immune function, impair the resolution of inflammation, influence gene expression, and accelerate biological aging.
For these reasons, restoring AMPK activity is a key strategy for improving metabolic health.
The Traditional Medical Approach to Weight Loss
For nearly a century, medicine has searched for drugs capable of producing meaningful and sustainable weight loss.
The newest generation of injectable medications primarily works by suppressing appetite and reducing calorie intake. This can lead to significant weight loss.
However, research indicates that a substantial portion of that weight loss comes from lean body mass, not just body fat (5). Loss of lean mass can reduce the metabolic efficiency of organs and tissues throughout the body, which may have long-term metabolic consequences.
The Metabolic Engineering® Approach
Metabolic Engineering® takes a different approach. Instead of focusing on suppressing appetite, it aims to improve metabolic efficiency at the cellular level by increasing AMPK activity (6).
When AMPK activity increases, the body becomes more efficient at oxidizing stored fat and using it for energy.
Metabolic Engineering® uses three complementary dietary strategies to support AMPK activity:
1. The Zone Diet
The Zone diet component helps reduce calorie intake without hunger or fatigue, which is one of the most effective nutritional strategies for increasing AMPK activity.
2. Omega-3 Fatty Acids
Omega-3 fatty acids help reduce neuroinflammation and promote its resolution, while also acting as indirect activators of AMPK.
3. Polyphenols
Polyphenols help reduce oxidative stress, and like omega-3 fatty acids, they can also indirectly stimulate AMPK activity.
When these three dietary components are combined, they create a coordinated strategy for maximizing AMPK activity and increasing the body’s ability to metabolize stored fat.
Beyond Weight Loss: Improving Healthspan
Reducing excess body fat through Metabolic Engineering® may also have benefits beyond weight loss.
Research indicates that diet-induced weight loss can reduce the number of senescent cells in adipose tissue (7). Because senescent cells contribute to inflammation and aging, reducing them may help improve overall metabolic health and extend healthspan — the number of years lived in good health.
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References
1. McLaughlin T, Allison G, Abbasi F, Lamendola C, Reaven G.Prevalence of insulin resistance and associated cardiovascular disease risk factors among normal weight, overweight, and obese individuals. Metabolism. 2004; 53:495-9. doi: 10.1016/j.metabol.2003.10.032.
2. Burton DGA and Faragher RGA. Obesity and type-2 diabetes as inducers of premature cellular senescence and ageing. Biogerontology. 2018; 19(6): 447-459.doi: 10.1007/s10522-018-9763-7.
3. Ruderman NB, Carling D, Prentki M, Cacicedo JM. AMPK, insulin resistance, and the metabolic syndrome. J Clin Invest. 2013; 123:2764-72. doi: 10.1172/JCI67227.
4. Saha AK, Xu XJ, Balon TW, Brandon A, Kraegen EW, Ruderman NB. Insulin resistance due to nutrient excess: Is it a consequence of AMPK downregulation?Cell Cycle. 2011; 10: 3447-51. doi: 10.4161/cc.10.20.17886.
5. Wilding JPH, Batterham RL, Calanna S, Davies M, Van Gaal LF, Lingvay I, McGowan BM, Rosenstock J, Tran MTD, Wadden TA, Wharton S, Yokote K, Zeuthen N, Kushner RF; STEP 1 Study Group.Once-weekly semaglutide in adults with overweight or obesity. N Engl J Med. 2021; 384: 989-1002. doi: 10.1056/NEJMoa2032183.
6. Sears B and Saha AK.Dietary control of inflammation and resolution. Front Nutr. 2021;8: 709435. doi: 10.3389/fnut.2021.709435.
7. List EO, Jensen E, Kowalski J, Buchman M, Berryman DE, Kopchick JJ. Diet-induced weight loss is sufficient to reduce senescent cell number in white adipose tissue of weight-cycled mice. Nutr Healthy Aging. 2016 4:95-99. doi: 10.3233/NHA-1614.
