logo
g Text Version
Beauty & Self
Books & Music
Career
Computers
Education
Family
Food & Wine
Health & Fitness
Hobbies & Crafts
Home & Garden
Money
News & Politics
Relationships
Religion & Spirituality
Sports
Travel & Culture
TV & Movies

dailyclick
Bored? Games!
Nutrition
Postcards
Take a Quiz
Rate My Photo

new
European Travel
Action Movies
Bible Basics
Houseplants
Romance Movies
Creativity
Family Travel


dailyclick
All times in EST

Low Carb: 8:00 PM

Full Schedule
g
g Infertility Site

BellaOnline's Infertility Editor

g

Zinc and Fertility


Are you getting enough zinc? Zinc has long been known to be essential for good fertility and new research now shows just how critical zinc is to help oocytes become more fertile.

Researchers at Northwestern University have discovered that mice oocytes nearing the final stages of maturation develop a huge need for zinc which must be met for the eggs to go through the final stages of maturation for fertilization to be possible. The lead researcher, Alison Kim, is quoted as saying:

"Understanding zinc's role may eventually help us measure the quality of an egg and lead to advances in fertility treatment,"

Tom O"Halloran, co-author of the study explained that; "Zinc helps the egg exit from a holding pattern to its final critical stage of development.....Zinc seems to be a key switch that helps control whether the egg moves forward in its development stage."

This innovative study found that substances which block the entrance of zinc into oocyte cells disrupted the oocyte maturation process, which could be restored by allowing zinc to flood back into the oocyte cells. The researchers also found that zinc levels significantly increased by 50% as the oocyte matured, and that zinc levels were much higher within the eggs than other metals such as iron.

This study may hold particular relevance for women undergoing IVF which can produce many immature eggs that are not mature enough to be fertilized successfully. Women undergoing IVF are producing so many oocytes simultaneously that they may have a short-term need for super-high levels of zinc as follicles reach maturation. It is possible that the amount of zinc in a prenatal vitamin and dietary sources is inadequate for the stimulation phase of IVF when oocytes become very hungry for zinc in the final stages of maturation.

How much zinc do you need. Because zinc is so critical to a healthy pregnancy and baby it is present at much higher levels in quality prenatal vitamins than the amount usually found in multivitamins - a good prenatal will have 30 mg or so of zinc per daily dose.

It is possible that taking a little extra zinc during IVF stimulation may give you the extra zinc required to support the maturation of so many oocytes at once. Studies are underway to further explore the connection between zinc, egg fertilization and IVF success.

Iron and zinc have a somewhat competitive relationship in that if you have to take high levels of iron - you may need to increase your zinc too.
Women with any kind of intestinal inflammation such as Chrones disease, colitis or inflammatory bowel disease may need to take extra zinc too, to compensate for their poor absorption levels.

The RDA for zinc is 8 mg per day for adults rising to 11 mg per day in pregnancy. Vegetarians are particularly susceptible to zinc deficiency as zinc is much lower in vegetarian food sources and is often poorly absorbed due to the phytic acid in whole grains and beans.

For vegetarians one of the richest sources of zinc is pumpkin seeds containing 2.6 mg per third of a cup. Other great vegetarian zinc sources include wheat germ, one quarter cup has 3.6 mg, sesame seed which contains 2.8 mg per quarter cup and mushrooms.

Oysters which have a strong reputation as a fertility food have a whopping 76 mg per 6 cooked oysters, 3 oz of beef contains about 6 mg and 3 oz of dark meat turkey contains about 3.8 mg.

Some natural fertility programs measure your individual zinc status and tailor supplements accordingly to ensure that you are getting exactly what you need. Check your prenatal vitamin and see how much zinc you are getting in yours.

This article is purely for educational and informational purposes and is not intended to substitute for medical diagnosis or treatment for which you should consult a physician.


References:

Alison M Kim, Stefan Vogt, Thomas V O'Halloran & Teresa K Woodruff. Zinc availability regulates exit from meiosis in maturing mammalian oocytes. Nature Chemical Biology, 2010

Northwestern University 2010, August 9. What makes a good egg and healthy embryo? Zinc discovery may help in future fertility treatments.

Science Daily, August 9, 2010.
Add Zinc+and+Fertility to Twitter Add Zinc+and+Fertility to Facebook Add Zinc+and+Fertility to MySpace Add Zinc+and+Fertility to Del.icio.us Digg Zinc+and+Fertility Add Zinc+and+Fertility to Yahoo My Web Add Zinc+and+Fertility to Google Bookmarks Add Zinc+and+Fertility to Stumbleupon Add Zinc+and+Fertility to Reddit




RSS | Related Articles | Editor's Picks Articles | Top Ten Articles | Previous Features | Site Map


For FREE email updates, subscribe to the Infertility Newsletter


Past Issues


print
Printer Friendly
bookmark
Bookmark
tell friend
Tell a Friend
forum
Forum
email
Email Editor


Content copyright © 2014 by Hannah Calef. All rights reserved.
This content was written by Hannah Calef. If you wish to use this content in any manner, you need written permission. Contact Hannah Calef for details.

g


g features
GLA May Reduce Cytokines And Help Implantation

Fish Oil May Benefit Women With PCOS

Myo-Inositol May Reduce Insulin In PCOS Women

Archives | Site Map

forum
Forum
email
Contact

Past Issues
memberscenter


vote
Poetry
Daily
Weekly
Monthly
Less than Monthly



BellaOnline on Facebook
g


| About BellaOnline | Privacy Policy | Advertising | Become an Editor |
Website copyright © 2014 Minerva WebWorks LLC. All rights reserved.


BellaOnline Editor