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PRESENTER: If you've spent your life experimenting with diets but still haven't got it right, there could be a very good reason. It could be that what you need is rather less pasta and wholemeal bread, and a couple of rich, fatty steaks instead. This controversial approach to dieting maintains that the 'one diet suits all' concept is just as ridiculous as one-size clothes, and that the key to a healthy diet lies in our blood group. Josephine Maguire is here to tell us how it works.
JOSEPHINE: The revelation that our blood group determines our diet has come as a shock to those of us who thought we were doing the right thing by avoiding meat and loading up on vegetables and pulses. It now appears we can no more decide what's good for us ... any more than we can decide our eye or natural hair colour. For example, it may come as a surprise to people belonging to blood type O that, to remain healthy, they should eat poultry and fish and small-but-frequent servings of red meat - but not pork -with some vegetables and fruit. They should also avoid grains, especially wheat, pulses and dairy products. And, while animal protein may make Os energetic, it has the opposite effect on As, who thrive on pulses, cereals, vegetables and fruit. Those lucky enough to belong to group B can eat just about anything they want!
The idea that there is a relationship between blood group and diet shouldn't come as such a surprise, since there are already well-recognised links between blood type and susceptibility to certain illnesses and diseases, For instance, Os are more prone to ulcers, while As are prone to cancer - and, as every lay person knows, it's vital for medical staff to know the blood group ol a patient before giving them a transfusion. The reason for this is that blood cells of each type identify one another by chemical markers on their surface, called antigens. When blood cells come across something from outside - a bacterium, a virus or hlood that's been transfused - they read its markers to identify whether it's friend or foe. If the wrong blood type is transfused, it will be labelled 'foe' and antibodies will be sent to destroy it. The connection between blood type and food lies in the discovery that food also has markers, called lectins, many of which are so similar to antigens that they are identified as such. When enemy lectins are sported on digested food, blood cells clump together in defence, resulting in a whole range of metabolic and digestive problems.
The reason for the different nutritional needs of each blood group originates in our past. Around 100,000 years ago it is believed that all humans were type O - hunter-gatherers who ate plenty of meat, but limited amounts of vegetables and absolutely no dairy products. Then As evolved, because they were eating an almost exclusively vegetarian diet, but still no milk, while Bs appeared even later, among people who were raising animals and consuming dairy products. The most recent group to develop are ABs, who emerged around 900 AD and who consume all food groups without ill effect. The bottom line is, if you stick to the basic needs of your blood type, you will be better equipped to fight disease or illness, if and when they rear their ugly heads!
According to the presenter, the notion that fatty meat could be
good for us is considered
People with blood type 0 can eat red meat apart from
Animal products do not make those with blood type A feel
The connection between blood group and bad health is
Bacteria in the bloodstream, for example, will be destroyed by
which distinguish one kind of blood cell from
Lectins are often mistakenly
as antigens because they are
very much alike.
The diet of humans 100,000 years ago was completely lacking in
The last blood type to evolve was type AB, in about
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