A healthy result should fall into the range 0.7 - 2.6 ng/mg.
16α-Hydroxyestrone (16α-OH-E1), or hydroxyestrone, also known as estra-1,3,5(10)-trien-3,16α-diol-17-one, is an endogenous steroidal estrogen and a major metabolite of estrone, as well as an intermediate in the biosynthesis of estriol. It is a potent estrogen similarly to estrone, and it has been suggested that the ratio of 16α-hydroxyestrone to 2-OH-E1, the latter being much less estrogenic in comparison and even antiestrogenic in the presence of more potent estrogens like estradiol, may be involved in the pathophysiology of breast cancer. Conversely, 16α-hydroxyestrone may help to protect against osteoporosis.
Synthetic and Natural Estrogens:
Estrone (E1), estradiol (E2) and estriol (E3) are the three estrogens. Synthetic estrogen (premarin) is made up of E1 and E2 estrogen. E1 is the main estrogen that the body makes post menopausally, and most researchers believe that high E1 levels increase the risk of breast cancer.
The metabolism of estrogen in women changes after menopause. The body metabolizes estrogen into two major pathways and one minor. The two major are 2 and 16-hydroxyeone (2-OH and 16 OH, respectively). The minor pathway is 4-hydroxyestrone (4-OH). 2-OH is the good metabolite. 2-OH does not stimulate cell growth and it blocks the action of stronger estrogens that may be carcinogenic.
16-OH has a significantly stronger estrogenic activity, and studies show that it may increase the risk of breast cancer.
4-OH is also not desirable as it may directly damage DNA and cause mutations, thus it is thought to promote cancer development. Premarin breaks down exclusively into 4-hydroxyestrogen.
16aOH-E1 is the immediate precursor to the weak estrogen, estriol (E3). Please also note that 16aOH-E1 is important for maintaining bone mineral density.
16-OHE1 has significant estrogenic activity and studies show it may be associated with an increased risk of breast cancer. Higher levels are associated with obesity, hypothyroidism, pesticide toxicity (organochlorines), too much Omega-6 fatty acids, and inflammatory cytokines.
Lowering levels of 16aOH-E1 have been achieved via indole-3-carbinol or one of its metabolites, di-indol methane (DIM). Soy and flax meal have also been shown to lower 16aOH-E1 levels.
$15 per monthSelect this plan
$59 per yearSelect this plan
$250 single paymentSelect this plan
Health is not exactly rocket science. You just have to know what your body needs and doesn't need. Your medical tests contain that information. Upload them to our service and we’ll help you understand, organize, and act on them.Get Started
"I was really concerned about my lab results and my GP was not able to see me for another week. Through HealthMatters I was able to interpret my results instantly."
"I've been keeping all my lab results in a spreadsheet, covering approximately 20 years. The HealthMatters team helped me upload that info into the cloud. I can show this data to my family and doctors now easily."
"I had no idea what my lab results meant. Here I found all the biomarkers that I was looking for online. Finally, I have not only organized them all neatly in one place, but I am also grateful to be able to understand what they mean."