Is it safe to fast when hypertensive?

Safe and Helpful!: In a research study nearly 90% of those with hypertension had large reductions in blood pressure after a 10 day medically-supervised fast. See http://www.Ncbi.Nlm.Nih.Gov/pubmed/11416824 it would be best to do this under the supervision of a doctor with knowledge about how to safely fast. While a water fast was used in the study, i believe a juice fast is safer.