Trump's health policy changes may put women at risk: Study

US President Donald Trump's sexual and reproductive health policy changes may threaten women's wellbeing across the world, an expert has warned.

"Much progress has been made in the use of more effective contraception and in the reduction of unintended pregnancies," said Professor Daniel Grossman from the University of California, San Francisco.

However, "Trump's policies could roll back progress on women's health," Grossman warns in a new study published in the Journal of Family Planning and Reproductive Health Care.

A concerning development is Trump's re-imposition of the Mexico City Policy, also known as the Global Gag Rule, which prevents US-funded organisations from providing, informing about or advocating for abortion care in their countries.

"If reducing abortion were the aim of this policy, it is not at all clear that this is effective, as data suggests the policy was associated with an increase in abortion in sub-Saharan African countries," Grossman said. This is possibly because affected organisations lost funding for contraceptive supplies.

Trump has made statements in support of reversing the Roe v Wade 1973 landmark ruling that made abortion legal. While it is unclear that this ruling could be overturned, it is worrying because "state legislatures and the US Congress will certainly feel emboldened under the new administration to pass more restrictive legislation," said Grossman. For example, the US House of Representatives passed a bill that would deny insurance coverage of abortion care to millions of women, and Trump indicated he would sign into law a federal ban on abortion after 20 weeks' gestation.

Several policy proposals have the potential to severely limit access to contraception, said Grossman.

This includes prohibiting clinics affiliated with Planned Parenthood from receiving federal funding from sources such as Medicaid and Title X, which help low income individuals.

Evidence has shown after clinics in Texas were excluded, contraceptive use declined significantly and unintended pregnancy increased.

The ACA provides women with insurance to access contraception without additional payments and research shows women's expenditure has fallen and contraceptive use appears to have increased.

The recent decline in abortion rates in the US has been partially related to improvement in contraceptive access and use. "These gains may be reversed if the contraceptive coverage guarantee under the ACA disappeared," warned Grossman.

Other benefits at risk under the ACA include companies reverting to biased policies that cause women to pay more for health insurance, and the decline of well-woman visits with screening for sexually transmitted infections, and mental health and substance use disorder services.

In addition, other anticipated policies could discriminate against women and lesbian, gay and transgender individuals, and impact access to sexual and reproductive healthcare services, Grossman said.