加载中…
Place · Level 3
激素 = 化学邮件 · 下丘脑总编辑部 · 5 个轴心 (甲状腺/肾上腺/胰岛/性腺/生长) · 营养是燃料和原料
synergy · 1
High urate and the metabolic-syndrome cluster (glucose, lipids, blood pressure, central adiposity, fatty liver) are mutual risks that reinforce each other, and the mechanism runs both ways rather than one causing the other.
regulates · 17
Hashimoto is autoimmune HPT — read it inside endocrine's thyroid axis to see levothyroxine timing + PPI/Fe interactions.
Kidneys are endocrine organs: EPO (erythropoiesis), 1α-hydroxylase (vitamin D activation), RAAS (renin → aldosterone). Declining function cascades through multiple hormone axes.
The HPG axis is the core reproductive-endocrine loop: GnRH → FSH/LH → gonads → E2/T → negative feedback. PCOS exemplifies the IR × androgen × HPG dysregulation triangle.
The hypothalamus orchestrates neuroendocrine integration: HPA (cortisol), HPT (thyroid), HPG (reproductive) all originate in PVN/ARC — chronic stress systemically disrupts all three hormone axes through this hub.
→Bone
PTH maintains serum calcium; calcitonin opposes it; estrogen protects BMD; excess cortisol causes secondary osteoporosis. The endocrine system orchestrates bone turnover.
The gut is the body's largest endocrine organ: GLP-1 stimulates insulin + appetite suppression; GIP modulates lipids; ghrelin triggers hunger. The postprandial incretin effect underpins GLP-1 receptor agonist therapy.
Muscle is an organ AND an endocrine organ: contraction releases myokines (IL-6, irisin, BDNF, FGF21) → distal metabolic effects. The mechanism behind exercise's whole-body benefits. Sedentary = muscle silent = whole-body metabolism muted.
One pair of cells, two modes: glucose up and beta cells release insulin — liver and muscle store glycogen, fat stores lipid, muscle builds protein; glucose down and alpha cells release glucagon — the liver breaks glycogen and runs gluconeogenesis, fat is mobilised. Storage and release is one switch, thrown by hormones.
←GERD
Visceral fat is the mechanical upstream of reflux: raised intra-abdominal pressure pushes on the gastro-oesophageal junction, so weight and reflux symptoms move together — even a 5 kg loss measurably cuts nocturnal reflux.
Insulin is the key that lets glucose into cells, and insulin resistance is the cell going deaf to it: the body compensates by making more and more, until the beta-cell key factory wears out — and that is the moment type 2 diabetes begins.
Inflammatory cytokines (IL-6) suppress HPT ('sick euthyroid' with falsely low T3) and stimulate HPA (elevated cortisol) — chronic inflammation and endocrine dysregulation are two sides of the same coin.
Liver converts T4→T3, produces IGF-1 (GH downstream), and is the first site of insulin resistance — 'obesity + fatty liver + hormone dysregulation' are three chapters of one metabolic story.
←Bone
Osteoblasts secrete undercarboxylated osteocalcin (uOcn) → enters blood → stimulates β-cell insulin secretion + improves insulin sensitivity. Bone IS an endocrine organ — bidirectional crosstalk with glucose control.
Skin is not only the vitamin D factory — it's also a local cortisol + sex-hormone metabolism organ. Chronic stress skin manifestations (eczema, alopecia, acne) partly run through local HPA axis + aromatase. Skin is a peripheral endocrine outpost.
Post-workout transient GH / IGF-1 / T spikes contribute little to hypertrophy (Schoenfeld 2013). Chronic baseline hormonal status matters more, but converges on the same mTOR pathway. 'Training boosts testosterone' marketing is worth roughly zero.
High-intensity HIIT → acute GH / catecholamine spikes; chronic hormonal change minimal. Acute peaks contribute little to long-term hypertrophy (Schoenfeld 2013).
Female T ~15-70 ng/dL vs male 300-1000 (5-20× differential). Cycle: strength slightly ↑ in follicular phase, slightly ↓ in luteal (Sims 2016).