Beta-Hydroxyisovalerate is a sensitive indicator of biotin deficiency and is a metabolite of the amino acid isoleucine.
Until recently, biotin deficiency was very difficult to determine in humans because this vitamin deficiency affects health in ways that mimic many other conditions. Doctors were likely to overlook biotin deficiency until this test was discovered.
b-Hydroxyisovalerate is made when the body is deficient in biotin. This marker has an inverse relationship with biotin, therefore elevated levels represent deficiencies in biotin. Biotin is an important cofactor in mitochondrial function, metabolism of fatty acids, glucose, and protein, as well as ROS production.
Factors that influence biotin levels include inadequate dietary intake, long-term and high-dose B5 supplementation, dysbiosis/gut health, antibiotic use, medications, and biotinidase deficiency.
High b-Hydroxyisovalerate = Low Biotin
Beta-Hydroxyisovalerate is a specific and sensitive metabolic marker for functional biotin deficiency. As your biotin intake decreases, your beta-hydroxyisovalerate excretion increases. Biotin deficiencies develop for a number of reasons, including pregnancy, antibiotic use, dysbiosis (microbial imbalance) and anticonvulsant therapy (treatment of neuropathic pain.
It is important to remember that raw egg whites are rich in the glycoprotein, avidin which binds with biotin leading to a deficiency.
Symptoms can include:
- hair loss
- skin rash
- immune deficiencies
- gait disturbances
- muscle weakness
- Consider supplementing with biotin. Include biotin rich foods such as legumes, cruciferous vegetables and sweet potatoes.
- Address dysbiosis.
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