Select Committee on Agriculture Minutes of Evidence


Supplementary Memorandum submitted by Dr Jean Monro (E13)

OFFER TO THE MINISTRY OF AGRICULTURE, FISHERIES AND FOODS TO ALLOW THEM TO UNDERTAKE A RETROSPECTIVE ANALYSIS OF DATA HELD AT BREAKSPEAR HOSPITAL IN CONNECTION WITH THE VITAMIN B6 DEBATE

  Amongst our patients, some 12,000, we have studied vitamin B6 from a functional point of view for many years. I wish to offer the opportunity to scrutinise our records to the Ministry because this will give them insight into the value of this vitamin. The importance of this is that most general practitioners are inhibited from recommending any dose in excess of 10 mg now because of the bad publicity that this vitamin has had. In my experience it is inhibited by various xenobiotics, in particular products of fungal metabolism as these can be competitive for its site of reception. The requirement of it can be heightened therefore by anybody who has had an extra requirement for antibiotics. After all, vitamin B6 was available in man's diet for aeons, yet antibiotics are only a recent innovation!

  The pathological evaluations which we have undertaken of functional availability of vitamin B6 (by erythrocyte transaminase activity and other methods) have proved that the patients have a deficiency status. Hence, not only would this not have been picked up by other practitioners who may have believed their supplements to be adequate, but also similar patients would now be debarred from their own self-protection.

  In addition I am offering a prospective evaluation to corroborate findings. Our facility should be regarded as a National Resource Centre in many respects as we have a unique and comprehensive documentation of such people at the outset prior to any prescribed treatment.

  People are defined as patients when they attend a doctor. They do not change state in that instant from being well to ill. They present with symptoms anywhere along a continuum of health to illness, but they may simply be regarded at that moment as "public". The patients who come to me may have seen many other doctors before they attend me. In fact in an independent market research survey 12.5 years on average had elapsed before their first seeking any help and attending me. None of the doctors had prescribed vitamin products. This is because most doctors have between three and 10 hours education on nutrition in their undergraduate curriculum, despite the fact that the majority of illnesses have a component of lifestyle and nutritional input. These patients have generally, in desperation, been attempting to take dietary supplements sold under food law to improve their condition or well-being.

  There is no such data-bank as ours available elsewhere, I believe, because we tend to assess a patient's nutritional status when they first attend. Therefore, before any treatment is undertaken for whatever their condition, these patients are simply members of the public who may or may not have taken vitamin B6 prior to attending.

  We have assessed the functional status of B6 in these patients by its effect on red cell enzymes, whose performance is impaired in a deficiency state. We therefore have, amongst our 12,000 patients group, a large number of people who have been assessed in this way. We also now have a large number of people whose vitamin B6 status has been assessed through lymphocyte growth factors following mitogen stimulation, which is another technique for B6 evaluation. The reason why these two methods are chosen is because it is difficult to assess the level of a vitamin which is only in trace amounts in the tissues of the body.

  Our data, therefore, has documentation of random members of the population who have happened to attend this hospital for evaluation, and whose nutritional status, including vitamin B6 levels, has been established before they receive any treatment. This is therefore an evaluation of the random, untreated population, only skewed by the fact that they attend the Breakspear Hospital. All these patients will also have been neurologically examined and whether or not a neuropathy is present will have been established. Because this is a population whose B6 levels have been evaluated before any treatment has been received, it therefore reflects the population at large who are able to get to health food shops to buy dietary supplements under the food law, and should be of interest to the Ministry of Agriculture, Fisheries and Foods.

THE EVALUATIONS WILL PROVE THAT WHAT HAS BEEN AVAILABLE TO THIS POPULATION HAS BEEN SAFE FOR THE POPULATION AT LARGE IN THIS COUNTRY.

  Scrutiny of our records as a retrospective analysis of the population's B6 levels and functional requirements from a random selection of the people would provide a more definitive evaluation than has previously been available of a population study. It may also be a real breakthrough for people in this country, the Ministry of Agriculture Fisheries and Foods, and might solve the controversy over vitamin B6.

  If the Ministry were to avail itself in this offer, the Environmental Medicine Foundation can be an intermediary as they have agreed to act as a collaborator.

7 April 1998


 
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