Bioidentical hormone replacement: our expert answers your questions.(Better nutrition special report: anti-aging)

1. What is BHRT?

BHRT stands for bioidentical hormone replacement therapy (also known as natural hormone replacement). The hormones are derived from yams and/or soy. Once they are extracted from their natural source, the hormones are refined so that they're identical to the human hormone molecule. BHRT fits the body's receptor like a key in a lock. Additionally, our bodies contain the right enzymes to break down and metabolize the hormones properly and efficiently. The idea of BHRT is to maintain proper hormone balance. Although 75 percent of our customers use BHRT for menopausal symptoms, we also compound hormones to help teens with acne, women with PMS and couples struggling with infertility.

2. What is the difference between BHRT and synthetic HRT?

HRT stands for hormone replacement therapy. It differs from BHRT in the type of hormone(s) used. Any type of hormone may be prescribed in HRT. Most commonly, doctors use hormones extracted from the urine of pregnant horses or hormones assembled in a laboratory. Neither is identical to the human hormone molecule. Improper ratios and different chemical structures account for treatment failures and a multitude of side effects.

3. What is the difference between over-the-counter (OTC) herbal products and BHRT?

OTC products are plant estrogens. They're not identical to the human hormone molecule. These products (soy, black cohosh, dong quai, red clover, etc.) are aimed at symptom control for the perimenopausal patient.

4. Will I gain weight once I start taking bioidentical hormones?