Hormonal
In skeletal muscle, the accumulation of lipid intermediates such as diacylglycerol (DAG) and ceramides directly impairs insulin-stimulated glucose uptake by activating serine/threonine kinases that inhibit the insulin receptor substrate-1 (IRS-1).
If you have insulin resistance, simply reducing total body fat is the standard approach, but understanding that specific toxic lipid byproducts (like DAGs) are the direct cause helps explain why some lean individuals or athletes might have different metabolic profiles. Focus on improving metabolic flexibility through exercise, which helps clear these toxic intermediates.
FA intermediates activate serine/threonine kinases that impair the ability of the insulin receptor to activate downstream targets, as IRS-1. This leads to decreased translocation of GLUT4 and therefore reduced glucose uptake into skeletal muscle cells [98–100].
Why this rating
The paper is a review citing multiple primary studies and established molecular pathways.
Source
Muscle Lipid Metabolism: Role of Lipid Droplets and Perilipins
Pablo E. Morales et al. · Journal of Diabetes Research · 2017
DOI 10.1155/2017/1789395
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →