Corticosterone
Corticosterone, also known as 17-deoxycortisol, is a steroid hormone of the corticosteroid type produced in the cortex of the adrenal glands. Corticosterone has multiple effects on memory. The main effects are seen through the impact of stress on emotional memories as well as long term memory. With emotional memories, corticosterone is largely associated with fear memory recognition. Not only does corticosterone have effects on emotional memories but memory recognition and consolidation as well.
What does it mean if your Corticosterone result is too high?
High levels of corticosterone on an advanced dried urine hormone profile can indicate dysregulation of the adrenal gland function or altered stress response. Corticosterone is a glucocorticoid hormone produced by the adrenal cortex and serves as a precursor to cortisol, the body’s primary stress hormone. While its physiological levels are typically much lower than cortisol, elevated corticosterone can reflect specific underlying conditions or imbalances:
Potential Causes of Elevated Corticosterone
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Chronic Stress or Overactivation of the HPA Axis:
- Prolonged physical or psychological stress can overactivate the hypothalamic-pituitary-adrenal (HPA) axis, increasing adrenal output of corticosterone and other stress hormones.
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Adrenal Gland Hyperactivity:
- Conditions like adrenal hyperplasia or Cushing's syndrome may result in increased production of adrenal hormones, including corticosterone.
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Impaired Conversion to Cortisol:
- Elevated corticosterone can indicate a disruption in the enzymatic conversion of corticosterone to cortisol, often caused by genetic factors or enzyme deficiencies, such as 11β-hydroxylase dysfunction.
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Inflammatory Conditions:
- Corticosterone has anti-inflammatory properties. Elevated levels may reflect the body's response to chronic inflammation or autoimmune conditions.
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Sleep Disruptions or Circadian Dysregulation:
- Corticosterone secretion follows a diurnal rhythm, with levels typically peaking in the morning and declining at night. Sleep disturbances or irregular sleep patterns can disrupt this cycle, leading to elevated levels.
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Dietary or Medication Influence:
- Certain medications (e.g., glucocorticoids or steroid precursors) or high carbohydrate intake can influence corticosterone production.
Clinical Implications
High corticosterone levels may indicate:
- HPA Axis Dysregulation: Suggesting chronic stress or maladaptive stress response.
- Metabolic Imbalance: Potential links to insulin resistance or metabolic syndrome.
- Hormonal Dysfunction: Highlighting adrenal-related disorders or imbalances in steroid metabolism.
Next Steps
If elevated corticosterone is detected, follow-up with a healthcare provider is essential to determine the cause. Additional tests, such as cortisol, ACTH (adrenocorticotropic hormone), and enzyme activity assays, may help clarify the underlying issue. Lifestyle modifications, such as stress management, improved sleep hygiene, and dietary adjustments, may also help regulate corticosterone levels.
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What does it mean if your Corticosterone result is too low?
Both Deoxycorticosterone (DOC) and corticosterone (CC) are down-stream metabolites of progesterone, and precursors of aldosterone, which helps regulate blood pressure through sodium and potassium balance. DOC is a weak mineralocorticoid and DOC and CC are precursors to the more potent mineralocorticoid aldosterone.
Salt craving and low blood pressure are symptoms/conditions associated with low aldosterone and its precursors DOC and CC.
Low DOC and CC suggest possible 21-hydroxylase deficiency, which results in low levels of both cortisol (via progesterone to 11-deoxycortisol) and aldosterone (via progesterone to DOC to CC).
If your urinary free cortisol and cortisone are within low to low-normal ranges it would support the notion of a 21-hydroxylase deficiency.
This is often caused by Congenital Adrenal Hyperplasia (CAH), a condition where excessive precursors spill over to androgens (expect higher levels of DHEA, androstenedione, etiocholanolone, androsterone, testosterone, epi-testosterone, dihydrotestosterone, and/or androstanediol) and symptoms of excessive androgens (e.g. loss of scalp hair, increased facial/body hair, acne).
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