GLOSSARY

Carbohydrate-Responsive Element-Binding Protein (ChREBP) is a transcription factor responding to carbohydrate status.

Nuclear receptors, transcription factors and coactivators participate in gene regulation but have distinct roles. A coactivator such as PGC-1α is not itself a PPAR receptor. NAD-dependent enzymes also differ from appetite hormones. A stronger experimental signal does not prove rejuvenation, fat loss or supplement benefit; tissue, stimulation duration and human outcomes must be established rather than inferring practical value from a molecular name or association.

AMPK, mTOR and related pathways integrate energy, amino-acid and other information; these proteins are not circulating hormones themselves. Components have different roles and tissue-dependent responses. A brief rise in an anabolic marker is not equivalent to guaranteed muscle gain. Effective training, adequate energy and protein and recovery opportunity are needed alongside molecular signaling for real outcomes rather than judging success from pathway activation alone.

Cellular sensors receive information about energy, nutrients and mechanical loading, and signaling networks coordinate responses. These signals are not all hormones, and activation of one marker does not guarantee greater muscle growth or performance. Practical interpretation requires the signal's magnitude and duration, target tissue, actual nutrient supply and measured outcomes during training and recovery to be considered together rather than treating one molecular response as the final result.

For practical use, record meal and training timing, sleep and hunger alongside actual intake and performance trends. When a marker changes, first examine measurement conditions and plausible explanations; food decisions should support adequate supply, tolerance and recovery rather than ending the assessment at one molecular signal or assuming a concentration change automatically establishes a useful intervention.

Sensitivity is response to a given signal and is not identical to hormone concentration or receptor number. Receptor abundance, binding and downstream signaling can each alter response. Maximum responsiveness also differs from a shift in sensitivity. One blood value cannot describe all tissue receptors; assay type and target tissue are needed to interpret resistance or sensitivity rather than treating these as directly interchangeable concentration measurements.

Exercise mode, intensity, duration, recruited muscle, training history and prior food influence hormonal responses. Acute changes differ from baseline adaptations after training. Higher concentration does not necessarily mean greater secretion or tissue effect, because clearance, plasma volume and receptors also matter. Performance develops through combined adaptations, so targeting a hormone peak is not sufficient for session design or supplement selection; actual recovery and performance must remain part of evaluation.

Hormonal imbalance is a broad description rather than a standalone diagnosis from an online symptom list. Deficiency, excess and resistance differ, and reference ranges depend on method, age and conditions. Medicines, illness, sleep and energy status also matter. Persistent symptoms need appropriate assessment to identify causes; choosing supplements or manipulating hormones from one isolated test cannot replace evidence-based evaluation or establish a universal athletic hormone target.