We talk as if science is ultimate truth. While there is lot of great things science has done, it is still an infant in front of nature.
Please see some facts: A few decades back aspirin was considered a great discovery and widely used. Later some researchers concluded that Aspirin is bad and it was banned. Now again asiprin is administered for curing many health issues. This is just an example. Every year we get so many controversial theories. Some say Coffee is not good and should be shunned and others say it has many great qualities - so it should be consumed in moderation. The fact may lie somewhere in between. How can we trust such science? Similar is the scientific satement about alcohol, while most say alcohol is bad and to be avoided some other studies recommend drinking in moderstion daily