Preterm Birth Risk from Prior Abortions = Higher Autism Risk
In 2009 it became settled science that women with prior induced abortions elevate their future risk of premature deliveries (under 37.0 weeks' gestation).
The following URL cites studies finding that premature newborns have elevated Autism risk: http://justiceforkids.webs.com/7abortionautismaxis.htm
As documented on that webpage, prior IAs (Induced Abortions) also increase a woman's risk of: Infection, Vaginal Bleeding, Depression; and Increased Maternal Age, which are all credible Autism risk factors.
A new medical treatment (as Vacuum Aspiration Abortion (VAA) was in 1958) is presumed 'guilty' of a credible adverse risk until demonstrated 'innocent' of that adverse risk by very strong evidence in published animal and human studies.
No supporter of surgical abortion (VAA, D & C, D & E, D & X) safety can cite one published SYSTEMATIC REVIEW clearing any of them of premature birth risk.
Induced abortions (IAs) elevate risks of reproductive tract infections, a weakened cervix, and mental depression; each one of these risks increases a woman's future odds of delivering a premature newborn baby.
Preterm babies have higher risk of 'MACE' (Mental retardation, Autism, Cerebral palsy, Epilepsy) disorders in addition to raised risk of blindness, deafness, respiratory distress, gastrointestinal injury, and serious infections than do full-term newborns.
In 2007, the Institute of Medicine (IoM), represented by eminent scientist Greg Roy Alexander (PhD), identified 14 “Immutable Medical Risk Factors Associated with Preterm Birth” with the third listed risk being “Prior first trimester induced abortion”;
URL: http://www.nap.edu/openbook.php?record_id=11622&page=625 
This IoM finding was confirmed by two (2) 2009 Systematic Reviews (SRs), with both reporting that women with multiple abortions have even higher premature delivery risk than women with exactly one prior induced abortion.[2,3]
The Dr. Prakesh Shah 2009 SR found that one prior IA boosted preterm delivery odds by 36% whereas more than one prior IA almost doubled prematurity odds (93% higher relative odds).
A Systematic Review is the category of medical study that provides the highest confidence, pro or con, about a purported risk factor.
There are ZERO Abortion-Prematurity SRs reporting that prior induced abortions do NOT significantly raise a woman's risk of a preterm delivery.
[i.e., NO systematic reviews indicate that abortion does not raise the risk of preterm delivery/birth]
According to the 2008 Dr. Eveline Himpens SR, a newborn between 28.0 and 32.0 weeks' gestation has fifty-five (55) times the CP (Cerebral Palsy) risk as a full-term newborn (at least 37.0 weeks' gestation).
The most common elective abortion surgery in Canada, Australia, and the U.S. (VAA) has zero published animal studies to validate its safety.
Thus, every 'suction' (i.e. VAA) abortion violates principle 3 of the 1947 Nuremberg Code.
Bottom Line: A Prior Induced Abortion is a Very Credible Autism Risk factor.
[31 October 2011]
Brent Rooney (MSc)
Research Director, Reduce Preterm Risk Coalition
1 Behrman RS, Butler AS, Alexander GR. Preterm Birth: Causes, Consequences, and Prevention. National Academy Press, Washington DC (2007)
[URL: http://www.nap.edu/openbook.php?record_id=11622&page=625 ]
2 Shah PS, Zao J. Induced termination of pregnancy and low birthweight and preterm birth: a systematic review and meta-analysis. BJOG 2009;116:1425-1442
3 Swingle HM, Colaizy TT, Zimmerman MB, Moriss FH. Abortion and the risk of subsequent preterm birth: a systematic review and meta-analysis. J Reprod Med 2009;54:95-108
4 Fletcher RW, Fletcher SW. Clinical Epidemiology The Essentials (Lippincott Williams & Wilkens, Philadelphia, p. 200, 2005)
5 Himpens E, Van Den Broeck C, Oostra A, Claders P, Vanhaesebrouck P. Prevalence, type and distribution and severity of cerebral palsy in relation to gestational age: a meta-analytic review. Dev Med Child Neurol 2008;50:334-340
6 Rooney B, Calhoun BC, Roche L. Does induced abortion account for racial disparity in preterm births, and violate the Nuremberg Code?
J Am Phys Surg 2008;13:102-104. [ URL: http://www.jpands.org/vol13no4/rooney.pdf ]