https://www.nytimes.com/2017/09/22/opinion/sunday/portugal-drug-decriminalization.html
only about 25,000 Portuguese use heroin, down from 100,000 when the policy began.
The number of Portuguese dying from overdoses plunged more than 85 percent before rising a bit in the aftermath of the European economic crisis of recent years. Even so, Portugal’s drug mortality rate is the lowest in Western Europe — one-tenth the rate of Britain or Denmark — and about one-fiftieth the latest number for the U.S.
In 1999, Portugal had the highest rate of drug-related AIDS in the European Union; since then, H.I.V. diagnoses attributed to injections have fallen by more than 90 percent and Portugal is no longer at the high end in Europe.
Just a couple highlights from the article linked, which, by the way, was written in September.