ANN ARBOR, Mich. -- Investigative reporter Karen Drew is exposing this controversial growing business of egg donation after many college girls have resorted to it to pay for their college education.

About 10,000 babies a year are born from donated eggs, and many of the donors are college women.

About 20 to 25 percent of first babies born are to women over the age of 35, and the fact is as eggs get older, they don't work as well, so more women are turning to egg donors.

With the high demand, more fertility clinics are now courting college students with thousands of dollars for their eggs.

Many students see the financial gain and do not really consider the long term effects, which still are not known.

You will find ads looking for egg donors in newspapers and on Craigslist.com

The ads promise to pay anywhere from $3,000 to $10,000.

Christina Cardellia has donated her eggs five times to help pay her college tuition.

It's about a three-week process that includes three to five visits a week to the doctor for monitoring, and injecting yourself with hormone boosting shots.

Women get one injection daily for the first week then for the second weeks it's two injections.

Three days before the surgery, you have an injection that induces ovulation.

With five donations, a student could potentially make $50,000.

Doctor Randolph, a professor of obstetrics and gynecology at the University of Michigan said, "There are risks associated with the medications that somebody needs to take to grow enough eggs to go through a donation cycle. The ovaries can get large cysts, and the woman can retain fluid and relatively get sick."

Critics say these young college women are not making informed decisions, and are not considering the risks.

Donors get paid regardless of whether a pregnancy occurs.

Fees are often high for donors with track records of producing lots of eggs resulting in births.

The Centers for Disease Control and Prevention require clinics to disclose success rates, and while experts say you should not donate more than six times, there is no agency that keeps records on this.

One woman wrote a book called "Confessions of a Serial Egg Donor" about a college girl who got so caught up by the tens of thousands of dollars she was making on her eggs that her body shut down.