By Jessica Arons, Center for American Progress

The Affordable Care Act, the Obama administration’s signature piece of legislation that reforms our nation’s costly and unfair health insurance market, is the greatest legislative advancement for women’s health in a generation. “Obamacare,” as the new law is more commonly known, holds the promise of ensuring coverage of preventive and essential services for women, eliminating gender discrimination by health insurance companies, and making health insurance more available and affordable for women and their families.

Yet all the recent talk about the constitutionality of the new law, culminating in oral arguments before the U.S. Supreme Court in March, makes it easy to forget the many lives at stake if the Affordable Care Act gets struck down—especially women’s lives. What would it mean for millions of women and their families if the Supreme Court struck down Obamacare? It would mean losing health insurance coverage guarantees that have already been put into place. And it would mean causing women to miss out on the protections that are slated to be implemented in less than two years. This would translate into poorer health for tens of millions of women, alongside more costly care for them and their families, affecting the lives of untold Americans.

Thanks to Obamacare, more than 45 million women have already taken advantage of recommended preventive services, including mammograms, pap smears, prenatal care, well-baby care, and well-child care with no cost sharing such as co-pays and deductibles. Starting this August, millions more will be able to obtain contraception, annual well-woman care (a visit with a gynecologist), screening for gestational diabetes, breastfeeding counseling and supplies, and screening for sexually transmitted infections, including HIV and the Human papillomavirus—again at no extra cost.

In addition, women will no longer encounter discrimination in the health insurance market in the form of lost maternity coverage, higher premiums due to their gender, and denials of coverage for gender-related pre-existing conditions. Indeed, close to 9 million women will gain coverage for maternity care in the individual market starting in 2014. And provisions in the new health law that protect everyone will especially benefit women, who utilize the health care system the most.

In short, Obamacare will increase health insurance coverage for women, lower their health care costs, and end the worst insurance industry abuses against them. Despite the clear benefits for women, opponents of health reform have taken their cause to the U.S. Supreme Court, which heard oral arguments debating the constitutionality of the law in March. The nine Supreme Court justices will rule on the matter in June. Although the case should be open and shut, the result is unfortunately far from guaranteed.

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