🦋 Thyroid & Metabolic Rate Risk Screener

Identify whether low body temperature, stubborn weight retention, cold intolerance, or thinning hair point to subclinical thyroid or T4-to-T3 conversion deficits.

1. Temperature Regulation & Cold Sensitivity:

Comfortable in normal temperatures; hands and feet stay warm

Occasionally chilly or sensitive to cold air conditioning

Chronically cold hands/feet, low morning body temp (<97.8°F / 36.5°C), or wear extra layers year-round

2. Weight Dynamics & Caloric Response:

Body weight responds predictably to dietary changes and exercise

Slow weight loss despite sticking to a clean diet and consistent exercise routine

Unexplained weight gain or total inability to lose weight even on severe caloric restriction

3. Skin, Hair & Facial Features:

Normal skin hydration, healthy hair texture, and normal eyebrow density

Slightly dry skin, brittle nails, or occasional mild facial puffiness

Dry/rough skin, thinning hair, loss of the outer third of eyebrows (Hertoghe sign), or puffy morning eyes

4. Bowel Motility & Energy Pattern:

Daily regular bowel movements and steady, predictable metabolic stamina

Bowel movements every 2 days; mild sluggishness or heavy morning fatigue

Chronic constipation (fewer than 3 times/week), brain fog, and deep systemic fatigue