Symptom library

Start with what you feel.
We'll show you what to measure.

Every symptom below maps to specific biomarkers, the panels that test them, and the common patterns we see in women with the same complaint. This is the library we wish existed when we started.

10 of 10

Low energy

Persistent fatigue

Fatigue that sleep doesn't fix is almost always a physiology signal - not a willpower problem. It's one of the most under-investigated symptoms in women's health, and also one of the most treatable once the right biomarkers are measured.

nutrientsthyroidhormones

Mental clarity

Brain fog

Brain fog is a symptom, not a diagnosis. It's a felt sense of mental slowness that can come from hormones, nutrients, thyroid, blood sugar, or sleep - and the combination matters more than any single number.

thyroidhormonesmetabolic

Body composition

Unexplained weight gain

Weight that arrives without a change in diet or activity is almost always hormonal. The pattern of where it lands - belly, hips, face - tells you which system to investigate first.

metabolichormonesthyroid

Mood

Mood swings & irritability

If your mood is cyclical with your period, or newly volatile in your late 30s-40s, the signal is in your hormone ratios - not just their absolute values.

hormonesnutrientsthyroid

Hair & skin

Hair thinning & shedding

Diffuse shedding almost always has a biomarker cause. The trick is catching it in the first 3 months - once a hair cycle completes, regrowth takes 6–9 months regardless of what you fix.

nutrientsthyroidhormones

Menstrual

Irregular cycles

Cycles that skip, shorten, lengthen, or change character after years of predictability are the single strongest signal from your reproductive system. They warrant investigation, not waiting.

hormonesthyroid

Sleep

Sleep disruption

Sleep that breaks around 2–4 AM in women over 35 is a biomarker story - usually progesterone, cortisol, or blood sugar, sometimes all three at once.

hormonesmetabolicnutrients

Sexual health

Low libido

Libido has a signal-to-noise problem - relationships, stress, sleep, medications all contribute. But persistent, unexplained low libido almost always has a biomarker contribution worth investigating.

hormones

Gut health

Bloating & digestive issues

Persistent bloating, irregularity, or food sensitivity often has a hormonal or nutrient component that gets missed when clinicians focus only on the gut itself.

thyroidhormonesnutrients

Temperature

Cold intolerance

Feeling cold when others are comfortable - especially in hands and feet, and especially as a new symptom - is one of the most specific thyroid signals there is.

thyroidnutrients

Not sure where to start?

Take the 3‑minute matcher.

We'll ask you about what you're feeling and match you to the panels that best explain it.

Start with what you feel.We'll show you what to measure.