Start with what you feel

Symptoms

One symptom, several possible root causes, and the markers that tell them apart.

Most symptoms have more than one plausible cause, and several of them often run together, which is why chasing one at a time is so frustrating. These pages work backwards from what you actually feel: the root causes worth considering, the specific marker that distinguishes each, and the point at which it stops being a testing question and belongs with a doctor instead.

Energy and the nervous system

The most dismissed symptoms on this list, and the ones where the useful markers are least likely to have been run.

브레인 포그

Thyroid, blood sugar, inflammation, B12, sleep. Five very different causes, five different markers.

피곤한데 말똥말똥해요

Exhausted all day and awake at night. Mostly a body clock and blood sugar question.

오후의 에너지 고갈

Fine at nine, flattened at three. The gap between eating and crashing is the clue.

새벽 세 시에 깨요

A specific pattern, and what you notice on waking narrows it fast.

이유 없는 불안

An overactive thyroid reads almost exactly like anxiety, and rarely gets checked.

Body and metabolism

Insulin governs fat storage and moves years before glucose does, which is why it sits under most of this group.

체중이 안 빠져요

When effort is not the variable, insulin, thyroid and sleep usually are.

단 것이 당겨요

A correction signal rather than a character flaw, and the curve that creates it.

항상 추워요

Cold when nobody else is. Heat production, and the conversion step TSH cannot see.

손발이 차가워요

Warm core, cold fingers. That combination is a distribution question.

머리카락이 빠져요

Iron stores, thyroid, and the three month delay that hides the cause.

아침에 얼굴이 부어요

Usually gravity. What matters is whether it has cleared by afternoon.

Gut, skin and joints

먹고 나면 배가 불러요

Timing after the meal narrows it faster than any single test.

피부에 뭐가 나요

Where it sits, when it flares, and the insulin pathway underneath.

관절이 아파요

Morning stiffness duration separates inflammatory from mechanical, and the first one has a window.

Hormones

성욕 저하

Usually has a date attached, and something written next to that date.

Each page names the markers in the body text and links straight to what they mean and how to test them. Where a symptom can signal something serious, that is stated near the top rather than buried at the bottom.

15 pages published so far. More are being added.

Arrive at your appointment with better questions

Occasional notes on the markers worth measuring, what the research supports, and where it stops.