Symptoms & hormones
Hormones influence energy, weight, mood, sleep, sex drive, and much more — so when several of these feel "off," people often wonder whether a hormone is involved. These guides explain the hormonal factors that can contribute to common symptoms, and which tests a clinician might consider. They are a starting point for understanding, not a way to diagnose yourself.
Browse symptom guides
Fatigue and Hormones: Possible Links Explained
A plain-language guide to how fatigue can relate to hormones, which hormonal and non-hormonal causes to consider, and which blood tests a clinician might use.
Weight Changes and Hormones: Possible Links
A plain-language guide to how weight gain or loss can relate to hormones, which conditions and blood tests a clinician may consider, and other causes.
Low Libido and Hormones: Possible Links
A plain-language guide to how low sex drive can relate to hormones, which conditions and blood tests a clinician may consider, and non-hormonal causes.
Mood Changes and Hormones: Possible Links
A plain-language guide to how mood changes can relate to hormones, which conditions and blood tests a clinician may consider, and key non-hormonal causes.
Sleep Problems and Hormones: Possible Links
A plain-language guide to how sleep problems can relate to hormones, which conditions and blood tests a clinician may consider, and key non-hormonal causes.
Hair Loss and Hormones: Possible Links
A plain-language guide to how hair loss can relate to hormones, which conditions and blood tests a clinician may consider, and important non-hormonal causes.
Irregular Periods and Hormones: Possible Links
A plain-language guide to how irregular periods can relate to hormones, which hormonal and non-hormonal causes to consider, and which tests are used.
Hot Flashes & Night Sweats: Hormone Links
A plain-language guide to how hot flashes and night sweats can relate to hormones, which causes a clinician considers, and when to seek medical advice.
Brain Fog and Hormones: Possible Links
A plain-language guide to how brain fog can relate to hormones, which hormonal and non-hormonal causes to consider, and which tests a clinician might use.
Cold or Heat Intolerance: Hormone Links
A plain-language guide to how feeling unusually cold or hot can relate to hormones, which causes a clinician considers, and when to seek medical advice.
Excessive Thirst & Urination: Hormone Links
A plain-language guide to how excessive thirst and frequent urination can relate to hormones, which causes a clinician considers, and when to seek care.
Acne and Hormones: Possible Links Explained
A plain-language guide to how acne can relate to hormones, which hormonal and non-hormonal causes to consider, and which tests a clinician might use.
Heart Palpitations and Hormones
A plain-language guide to how heart palpitations can relate to hormones, which causes a clinician considers, the tests they may use, and when to seek advice.
Excessive Sweating and Hormones
A plain-language guide to how excessive sweating can relate to hormones, which causes a clinician considers, the tests they may use, and when to seek advice.
Infertility and Hormones
A plain-language guide to how infertility can relate to hormones, which causes a clinician considers, the tests they may use, and when to seek advice.
Muscle Weakness and Hormones
A plain-language guide to how muscle weakness can relate to hormones, which causes a clinician considers, the tests they may use, and when to seek advice.
Bone Pain, Fractures and Hormones
A plain-language guide to how bone pain and fractures can relate to hormones, which causes a clinician considers, the tests used, and when to seek advice.
Sources
- MedlinePlus (U.S. National Library of Medicine). Hormones. https://medlineplus.gov/hormones.html
- MedlinePlus. Endocrine Diseases. https://medlineplus.gov/endocrinediseases.html