Pregnant women, for way too long, have been told that there's no safe level of drinking in pregnancy. For some, that's just increased anxiety and made pregnancy a worse experience than it's needed to be.
Others took the message to heart and, fearing that they'd done something horrible by having had too much to drink before knowing they were pregnant, have sought abortions.
The main risk of drinking too heavily in the very very early stages of pregnancy is miscarriage: spontaneous abortion. Because the anti-alcohol establishment has convinced women that any amount of drinking is going to result in foetal alcohol syndrome, some women are seeking abortions in order to avoid the risk of miscarriage.
Via James Nicholls, I find this piece at The Guardian:
I'd characterised doctors' advice on drinking and pregnancy as being the noble lie: that they know it's a lie, but they're scared of encouraging risky heavy drinking in later pregnancy by saying light drinking's ok. The lie isn't noble. It is doing harm. Please stop.