Sure he has...The Lds church came out with two General Authority statement positions on abortion
-- one after Roe vs. Wade (1973)...
...and a slightly revised 1983 statement.
Marion G. Romney -- a cousin to Mitt's dad -- was part of the Lds 'First Presidency' that devised the 1973 statement ... along with Harold B. Lee, then Lds "prophet" -- and N. Eldon Tanner.
One of the "exceptions" for sanctioning abortions per the 1973 statement was: ...except...the life or good health of the mother is seriously endangered...
Note, tho that pregnancy isn't a disease and aside from ectopic pregnancies - which lead to both Mom & child dying - doctors aren't "prophets" who can predict the outcomes of pregnancies re: health effects upon “Mom”.
In 1983, the LDS updated statement on abortion changed a few things, but still said: ”The only exceptions are the rare cases where, in the opinion of competent medical counsel, the life or HEALTH of the woman is in jeopardy or the pregnancy resulted from incest or rape."
Romney adopted these same exceptions in his policies (CBS News, Aug. 27, 2012)...and is willing to impose them upon the pre-born...
"My position has been clear throughout this campaign," Romney said. "I'm in favor of abortion being legal in the case of rape and incest, and the HEALTH and life of the mother."
Source: Romney: My views on abortion rights are clear
#1, If "health" and "life" meant the same thing, it would have been redundant for Romney to mention both...he knows they are distinct, and hence mentioned both...Also, #2 abortions for reasons of incest only serves to cover up the crimes of the perpetrator...and these kind of policies only aid & abet such incest perpetrators...