Vitamin B8 is also known as inositol, and it has several important benefits and uses:

1. Neural Tube Defects: Research suggests that inositol, when taken alongside folic acid, may be more effective in preventing neural tube defects (NTDs) during pregnancy compared to folic acid alone¹.

2. Polycystic Ovary Syndrome (PCOS): Inositol, specifically myo-inositol, has shown promise in managing PCOS. It can help lower androgen levels, improve insulin sensitivity, and regulate menstrual cycles in women with PCOS²³.

3. Insulin Sensitivity and Blood Glucose Control: Both myo-inositol and D-chiro-inositol have insulin-mimetic properties, helping to improve insulin sensitivity and reduce blood glucose levels in conditions like Type 2 Diabetes Mellitus (T2DM) and gestational diabetes⁴⁵.

4. Mental Health: Inositol has been studied for its potential benefits in treating mood disorders, including depression and anxiety, although more research is required in this area⁶.

5. Lipid Profiles and Cardiovascular Health: Inositol supplementation has shown potential in improving lipid profiles by reducing levels of triglycerides, total and LDL cholesterol, which can contribute to better cardiovascular health⁷.

While inositol is generally considered safe, high doses or long-term use, particularly of D-chiro-inositol, can lead to adverse effects such as menstrual abnormalities and insulin resistance in some individuals⁸. Therefore, it is important to consult a healthcare provider before starting any new supplement regimen.

Footnotes

1. Great Ormond Street Hospital study on inositol and folic acid for preventing NTDs ↩

2. Meta-analysis of myo-inositol effects on PCOS ↩

3. Review on therapeutic interests of myo-inositol ↩

4. Inositol's role in glucose metabolism and insulin resistance ↩

5. Blood glucose and HbA1c reduction with inositol in T2DM ↩

6. Examine.com overview of inositol benefits for mental health ↩

7. Systematic review on inositol and lipid profiles ↩

8. High doses of D-chiro-inositol and menstrual abnormalities ↩