The brains of the subjects who received vitamin B shrank on average half as fast as those from the placebo group. The effect was particularly pronounced in participants whose homocysteine levels were very high at the start of the studio.
Commenting on the study, Professor David Smith, the study’s research leader, said: “We have hope that this simple and safe treatment method may delay the development of Alzheimer’s disease, at least in those patients who have only mild memory impairment.”
In scientific circles, the results were discussed controversially and the comparatively high vitamin doses were criticized because of possible side effects. However, even if the above amounts sound high, they are still well below the “Tolerable Upper Intake Level” defined by the European Food Safety Authority – i.e. the highest tolerated daily intake. These amounts describe the upper limits that are considered safe and harmless for a lifetime of daily intake.
In general, criticism of methods that rely on high doses of vitamins is common in conservative medical circles: the reason for this is that these high doses often bring very positive effects and put the (often expensive and futile) attempts of the pharmaceutical industry in the shade.
Even when it comes to dementia prevention, millions of dollars of research money have already been gobbled up in search of efficient drugs, without any significant findings being made.