Desulfovibrio, a genus of bacteria in the human gut identified through microbiome testing, plays a role in reducing sulfate to hydrogen sulfide. These anaerobic bacteria are influenced by diet, particularly sulfur-rich foods, and the overall health of the gut microbiota. While Desulfovibrio contributes to the gut's sulfur cycle under normal conditions, an overgrowth is associated with health issues like inflammatory bowel diseases, attributed to excessive hydrogen sulfide production. Managing their levels typically involves dietary modifications to reduce sulfur intake and increase fiber, alongside probiotics and prebiotics to promote a balanced gut microbiota. In cases where elevated Desulfovibrio is linked to gastrointestinal conditions, healthcare professionals may recommend further diagnostics and tailored medical interventions to restore microbial balance and address individual health needs.
A sulfate-reducing bacteria
commonly found in the human gut microbiome
a species of sulfate-reducing bacteria
Opportunistic Bacteria (takes advantage of poor gut health)
Understanding the Dexamethasone Suppression Test (DST) Dexamethasone is a synthetic glucocorticoid used in diagnostic testing to evaluate the hypothalamic-pituitary-adrenal (HPA) axis, your body's stress response system. If this biomarker appears on your lab report, it typically indicates you've undergone a Dexamethasone Suppression Test (DST). The DST assesses how your body responds to glucocorticoids, hormones that regulate stress response, metabolism, immunity, and inflammation. The test involves taking an oral dose of dexamethasone at bedtime, followed by a blood test to measure cortisol levels the next morning. Normally, dexamethasone suppresses cortisol production. Test Results and Diagnostic Insights Normal Response: Cortisol levels are appropriately suppressed, indicating a healthy HPA axis. Abnormal Response: Persistently high cortisol levels may suggest conditions like Cushing's syndrome, adrenal insufficiency, or even certain types of depression. Factors Influencing Results Current medications, stress, and underlying medical conditions can affect the test's accuracy. For this reason, DST results should always be interpreted by a healthcare professional, who can provide personalized guidance based on your health history and test results. If dexamethasone is mentioned on your lab report, schedule a discussion with your healthcare provider to understand the implications and determine any necessary next steps for your health.
part of the celiac disease diagnostic process
Omega-3 fatty acid
Omega-3 Fatty Acids
The DHA (Docosahexaenoic Acid) test within red blood cells (RBC), featured in the Micronutrient panel by Vibrant America, is a crucial assessment tool for evaluating levels of DHA, an essential omega-3 fatty acid. DHA is paramount for brain health, visual function, and maintaining the integrity of the nervous system. By measuring DHA in RBCs, this test offers a more accurate and long-term representation of omega-3 fatty acid status than serum measurements, reflecting the body's true DHA utilization. This is particularly important for brain development in infants and children, cognitive function in adults, and in the management of cardiovascular health. The RBC DHA test is a key component for individuals aiming to optimize their omega-3 intake, especially for those with dietary restrictions or specific health concerns where DHA plays a preventive or therapeutic role. Vibrant America's Micronutrient panel, including the DHA (RBC) test, is invaluable for healthcare professionals in customizing dietary and supplementation strategies to enhance overall health. Accurate DHA assessment is essential for early detection and effective management of health issues related to omega-3 deficiency, thus playing a significant role in preventive healthcare and contributing to long-term wellness. This test is particularly beneficial for pregnant women, older adults, and those at risk of cognitive decline, ensuring adequate DHA levels for optimal health outcomes.
DHEA levels peak at around age 25
DHEA concentration alters significantly with age, gender and time of day.
DHEA-S is the sulfate ester of DHEA
Dehydroepiandrosterone (DHEA), a hormone produced by the adrenal glands, is the precursor for estrogens and testosterone, and is therefore normally present in significantly greater quantities than all the other steroid hormones. It is mostly found in the circulation in the form of its sulfate ester, DHEA sulfate (DHEA-S), levels of which in saliva are higher and more stable than those of DHEA. Its production is highest in the late teens to early 20s and declines gradually with age in both men and women. Levels of DHEA-S reflect adrenal gland function. Low DHEA-S indicates adrenal insufficiency and/or androgen deficiency and can be associated with reduced libido and general malaise. High DHEA-S levels are seen in hyper-adrenal states such as CAH, and in polycystic ovarian syndrome; high levels in women are associated with masculinizing effects because of its local metabolism to testosterone. DHEA supplementation has been successfully used to treat adrenal insufficiency and can restore normal levels of testosterone in women with androgen deficiency, particularly as a consequence of ovary removal. Because of its conversion to potent estrogens and androgens, levels should be closely monitored during supplementation to avoid excess. DHEA is a supplement commonly used topically and orally. It is marketed as a dietary supplement for weight loss, increased metabolism, and memory enhancement.
DHEA is produced in the adrenal glands and is a precursor to both testosterone and estrogen. DHEA also affects bone density, response to stress, mood and cognitive function, improves insulin sensitivity, and is associated with decreased cardiovascular and cancer risk. It peaks in the mid-20s and begins to decline after 30. Longevity is associated with higher than age-normal levels of DHEA. Low levels may be a sign of adrenal stress and/or reduced androgen production. Adrenal support and meditation can increase DHEA levels, or supplementation may be appropriate. High levels are common with PCOS or may be a sign of over-supplementation.
DHEA - Saliva (pg/mL): An Overview DHEA (Dehydroepiandrosterone) is a steroid hormone produced primarily by the adrenal glands, with smaller contributions from the ovaries or testes. It serves as a precursor for other sex hormones, such as testosterone and estrogen, and plays a critical role in regulating various physiological processes. Measuring DHEA levels in saliva provides insight into adrenal gland function, hormonal balance, and overall health. Why Measure DHEA in Saliva? Saliva testing offers a non-invasive, convenient method to assess bioavailable DHEA. Unlike serum testing, which measures both bound and unbound hormone levels, saliva testing reflects the active, free form of DHEA that is readily available for use by the body. Normal Ranges DHEA levels vary based on age, sex, and time of day. They are typically highest in the morning and decline throughout the day. The reference range for DHEA in saliva is generally expressed in pg/mL and may vary slightly between laboratories. Functions of DHEA Hormone Production: Acts as a precursor for testosterone and estrogen synthesis. Stress Response: Helps modulate the body's reaction to stress by balancing cortisol levels. Immune System Support: Enhances immune function and reduces inflammation. Bone Health: Supports bone density by interacting with other hormones like estrogen. Cognitive Health: Plays a role in memory, mood, and overall brain function. What Do Abnormal Levels Indicate? High DHEA Levels Elevated levels of DHEA in saliva may indicate: Adrenal Hyperactivity: Often linked to chronic stress or overactivation of the hypothalamic-pituitary-adrenal (HPA) axis. Polycystic Ovary Syndrome (PCOS): Common in women, with symptoms like irregular periods, hirsutism, and acne. Androgen Excess: Can lead to symptoms like increased body hair, oily skin, or hair loss. Adrenal Tumors or Disorders: Rare but may contribute to increased DHEA production. Low DHEA Levels Reduced DHEA levels may suggest: Adrenal Insufficiency or Fatigue: Often caused by chronic stress, leading to depleted adrenal reserves. Aging: DHEA production naturally declines with age, typically starting in the mid-30s. Chronic Illness or Immune Dysfunction: Conditions like autoimmune diseases or prolonged infections may lower DHEA levels. Hormonal Imbalances: Low DHEA can disrupt estrogen and testosterone synthesis, leading to fatigue, low libido, and mood changes. Clinical Uses of DHEA Testing Stress and HPA Axis Assessment: Evaluates the balance between DHEA and cortisol to identify stress-related imbalances. Hormonal Health Monitoring: Helps diagnose conditions like PCOS, adrenal fatigue, or menopause-related symptoms. Anti-Aging Research: Used to track hormone decline and its impact on physical and cognitive health. Athletic Performance: Assesses hormonal balance in athletes to prevent overtraining or stress-induced imbalances. How to Optimize DHEA Levels Manage Stress: Practice relaxation techniques like mindfulness, yoga, or meditation to support adrenal health. Improve Sleep Hygiene: Aim for 7–9 hours of quality sleep to maintain healthy hormone cycles. Balanced Diet: Include nutrient-dense foods rich in zinc, magnesium, and healthy fats to support hormone production. Exercise Moderately: Regular, moderate physical activity can improve hormonal balance without overtaxing the adrenal glands. Consider Supplementation: In cases of low DHEA, healthcare providers may recommend DHEA supplements under supervision. Conclusion The DHEA - Saliva (pg/mL) test is a valuable tool for assessing adrenal health, hormonal balance, and overall well-being. Abnormal levels can provide critical insights into stress response, aging, and endocrine function. By addressing underlying causes and adopting a proactive approach, individuals can optimize their DHEA levels and enhance their overall health. Always consult a healthcare provider for personalized interpretation and guidance.
Produced by both the adrenal gland and the brain