NEW YORK (Reuters) – As a growing number of Americans are using birth control pills to delay having children, a growing body of research suggests they may actually harm the women they’re intended to help.
Researchers at Columbia University, Rutgers University and New York University have published research that suggests that when women take the pill for less than a year, they may be less likely to get pregnant than women who get the pill and use it for years.
They say that when they’re still using birth-control pills, women’s reproductive health and overall health are less protected.
They found that women who take the Pill for three months or less are more likely to have a child than women using the Pill and the pill more than six months.
The women who took the pill had lower levels of both of these markers of maternal health, compared with women who got the pill but used it for longer, they found.
The findings suggest that the Pill, which is also known as the “morning-after pill” or “pre-ejaculation pill,” may be more harmful than we might think.
The study, which was published in the journal Archives of Internal Medicine, found that the risk of having a child if a woman was on the Pill was nearly as high as if she were not using the pill.
The researchers used data from the National Survey of Family Growth to compare the rate of pregnancies among the Pill users with the rate among nonusers, as well as information from the Census Bureau on the prevalence of contraception use and the number of births among women ages 25 to 39 years old.
In general, Pill users are less likely than nonusers to have children, but women who are on the pill have the highest rates of fertility problems, according to the study.
The average woman using the pills for three years or less is 4.1 times more likely than women not using them to have one child.
But women who were on the pills at least a year were 3.6 times more unlikely to have two or more children.
In contrast, the average Pill user who used the pill four or more times was about three times more than the average nonuser.
This finding raises a question that has been debated in the contraceptive field: Should birth control be considered to be a form of birth control?
The Pill is the only form of hormonal birth control that has ever been shown to be 100 percent effective in preventing pregnancy.
The FDA recently approved the pill in large numbers of women, and the drug has been used to treat sexually transmitted diseases like gonorrhea, chlamydia and syphilis.
The pill, like most hormonal birth- control, is effective for at least six months after it’s taken.
In this study, the researchers found that Pill users who took three months to three years off of the Pill had the lowest rates of pregnancy compared with the Pill-nonusers who used it and the nonusers who didn’t use it.
The results are particularly troubling, since they come from a large, well-conducted study.
The researchers say they’ve used the data for nearly a decade to estimate how much longer it will take for Pill use to have an effect on pregnancy rates.
While the findings have not yet been replicated in a randomized controlled trial, the findings suggest it’s unlikely the Pill could ever be considered a form or a medication of birth.
“If we’re going to start talking about whether the Pill is a contraceptive, we should be talking about what the evidence is that it’s really effective,” said Richard H. Ives, an epidemiologist at the Johns Hopkins Bloomberg School of Public Health who was not involved in the research.
Holly O. Jones, a research associate in Columbia’s Department of Health Policy and Management, said the research highlights the need for more research into the effects of hormonal contraceptives.
The Pill, she said, is a “pretty effective” birth control method.
And it’s “not the only thing that’s effective.”
“There are a lot of different things that can help prevent pregnancy,” she said.
Jones and her co-author, Elizabeth F. Wengler, a sociologist at Rutgers University, looked at data from more than 14,000 women who had used the Pill.
They compared the Pill’s effectiveness in preventing pregnancies with other methods of birth-contraception, including condoms and oral contraceptives.
They found that if a person is on the contraceptive, her risk of getting pregnant is only 1.4 times lower.
If a woman uses a condom, she’s 1.5 times less likely, but if she’s on the drug she’s 6.3 times less.
For oral contraceptives, she had the same odds of pregnancy.
In other words, if you use a condom or a condom-only method of contraception, you’re almost as likely to avoid pregnancy as a woman who uses a hormonal contraceptive.
But if you’re on a hormonal pill, your chances of getting pregnancy are about twice as high.
“We need to think about how we can make birth control more safe and effective for