Why is 3-6 mg recommended?

The recommendation of 3-6 mg of boron is based on its role in regulating sex hormone-binding globulin (SHBG) with minimal risk of adverse effects due to its mostly acute action. This dosage is seen as effective in reducing SHBG levels, even if temporarily, which could potentially have beneficial health effects without significant long-term risks. The context provided suggests that even though the effects are short-lived, using boron in this range may help regulate SHBG effectively 1.