Seasonal Affective
Disorder (SAD)

Seasonal Affective Disorder (SAD) is a type of depression that manifests in the dark winter months. A lack of sunlight affects the production of melatonin, and serotonin and disturbs circadian rhythms which can lead to symptoms of SAD.

Associated Symptoms

  • Low mood
  • Irritability
  • Lethargy
  • Sleeping for longer periods of time
  • Carbohydrate cravings
  • Loss of interest in daily activities

Relevant Test 1

Neurotransmitters Extensive Code 4026

Relevant Test 2

Mauve Factor (formerly Kryptopyrroles) Code 4011

Relevant Test 3

Histamine Metabolism Profile Code 4006