Nov 102012
 

The fertility of women can be determined by Mother’s age at menopause, a study has concluded.

Those women whose mothers has an early menopause has fewer eggs in their ovaries than those whose mothers had later menopause.

The women have fewer eggs have fewer chances to conceive.

The study of 527 women aged between 20 and 40, was reported in the journal Human Reproduction.

Researchers used two methods to examine how many eggs the women had – known as their “ovarian reserve” – levels of anti-Mullerian hormone (AMH) and antral follicle count (AFC).

“There is no actual test that can accurately determine fertility currently.”

Women are born with all the eggs they will ever have. These are released from the ovary cyclically, usually one every month after puberty, until menopause.

The AFC and AMH give readings doctors an idea of how many yet-to-be released eggs remain in the ovary.

The research also found that both AMH and AFC declined faster in women whose mothers had an early menopause (before the age of 45) in comparison to women whose mothers had a late menopause (after the age of 55).

The average AMH levels declined by 8.6%, 6.8% and 4.2% a year in the groups of women with mothers who had early, normal or late menopause, respectively.


A similar pattern was seen for AFC, with annual declines of 5.8%, 4.7% and 3.2% in the same groups, respectively.

The past research shows that there is about 20 years between a woman’s fertility starting to decline and the onset of menopause. So, a woman who experience menopause at 45 may have experienced a decline in her fertility at the age of 25.

Lead researcher Dr. Janne Bentzen said, “Our findings support the idea that the ovarian reserve is influenced by hereditary factors. However, long-term follow-up studies are required.”

“It doesn’t mean that having fewer eggs will have fewer babies.”

Dr. Valentine Akande, a consultant gynaecologist and spokesman for the British Fertility Society, said the findings were helpful, but that women should not be overly concerned if their mother did have an early menopause.

“There is a huge amount of variation among women. Some will have more eggs and some will have less.”

“Whilst it is assumed that lower egg number is associated with more challenges at getting pregnant this study did not look at that.”

“The advice remains the same – the younger you start trying for a baby the more likely you are to be successful.”

Women are most fertile between the ages of 18 and 31.

Nov 042012
 

facebookThere are too many uses and benefits of Social Networking site i.e. Facebook.com. Even having too much uses and benefits, it has some of the drawbacks too. The one of the drawback or security vulnerability is exposing nowadays. There is the issue of security even it has moved quickly to shut down the gap which made some accounts accessible without a password.

The issue was exposed in a message that is posted to the Hacker News website. The message contained a search string that when used on Google, returned a list of links to 1.32 million Facebook accounts. If some of the links are clicked then it will logged into the account without the need of a password. All the links exposed the email addresses of the Facebook users.

The search syntax uncovered a system used by Facebook that lets users quickly log back into their account.

Facebook has also provided a link in email about status updates and notifications for the user to respond it quickly by clicking it to log in into their account.

Facebook security engineer Matt Jones said the links were typically only sent to the email addresses of account holders. Links sent in this way can only be clicked once.

“For a search engine to come across these links, the content of the emails would need to have been posted online,” he wrote. Mr Jones suspected this is what happened as many of the email addresses exposed were for throwaway mail sites or for services that did a bad job of protecting archived messages.

Most of the million or so links exposed would already have expired, said Mr Jones.

“Regardless, due to some of these links being disclosed, we’ve turned the feature off until we can better ensure its security for users whose email contents are publicly visible,” he said.

Mr Jones added that Facebook had taken steps to secure the accounts of people who had been exposed by the flaw. Many of the exposed accounts were in Russia and China.

In an official statement, Facebook said the links were sent “directly to private email addresses to help people easily access their accounts, and we never made them publicly available or crawlable.”

However, it said, the links were then posted elsewhere online which lead to them being indexed on search engines.

It said: “While we have always had protections on these private links to provide an additional layer of security, we have since disabled their functionality completely and are remediating the accounts of anyone who recently used this feature.”