The heavy loading phase is strongly linked to increased intestinal permeability, often called leaky gut
GLP-1-related fatigue often presents as: Persistent low energy despite adequate sleep Mental fog or difficulty concentrating Physical weakness or feeling heavy Lack of motivation for usual activities Energy that comes and goes in waves Feeling more tired after eating (or not eating) This type of fatigue tends to feel different from ordinary tiredness and may fluctuate, especially around dose increases, significant dietary changes, or periods of rapid weight loss
References: Albericio, F., & Kruger, H
The model was estimated on un-transformed concentration values, and a proportional error model was used to describe the residual variability
However, SWE is highly operator- and device-dependent and lacks standardized thresholds across platforms, limiting its broad clinical utility