Vitamina B12
Páginas: 2 (311 palabras)
Publicado: 12 de octubre de 2011
Vitamin B12 deficiency linked to memory problems
A new study finds that a deficiency in vitamin B12 is associated with memory and thinking problems, as well as brain shrinkage. The research ispublished in the journal Neurology. Researchers find a strong association with markers of deficiency, said study co-author Dr. Martha Morris of the Rush University Medical Center in Chicago.
Thetheory is that adequate levels of vitamin B12 is necessary for the brain's myelin sheath, an insulating layer around nerves. When the sheath gets damaged, impulses between transmitted along nerve cellsslow down.
Vitamin B12 is found in meats, fish, shellfish and dairy products, and some cereals are fortified with it. People over 65 in particular may need B12 supplements because older patients'bodies have a harder time absorbing this vitamin.
Researchers looked at 121 participants in the Chicago Health and Aging Project. They looked at both serum levels of vitamin B12 and markers ofvitamin B12 deficiency.
The study found that a marker of vitamin B12 deficiency, is associated with a reduction of brain volume and so may contribute to cognitive problems. Homocysteine, an amino acidassociated with low B12 levels as well as folate, was linked to thinking problems through a different mechanism involving abnormal white matter signals (as seen on certain kinds of MRIs).
Summary:Scientists showed in 112 participants that markers of vitamin B12 deficiency are associated with reduction of brain size and thinkig problems. Vitamin B12 is important for myelin sheat.Reflexion: Impact in people and in the world. Healthy diet is important to avoid vitamin deficiency. We have to eat food with vitamine B12, like meats, fish, shellfish, dairy products, and some cerealsfortified with vitamin B12.
Also is important to give vitamin supplements to people with absortion problems, for example older tan 65 years, to avoid cognition problems.
Source: http:// cnn.com
A new study finds that a deficiency in vitamin B12 is associated with memory and thinking problems, as well as brain shrinkage. The research ispublished in the journal Neurology. Researchers find a strong association with markers of deficiency, said study co-author Dr. Martha Morris of the Rush University Medical Center in Chicago.
Thetheory is that adequate levels of vitamin B12 is necessary for the brain's myelin sheath, an insulating layer around nerves. When the sheath gets damaged, impulses between transmitted along nerve cellsslow down.
Vitamin B12 is found in meats, fish, shellfish and dairy products, and some cereals are fortified with it. People over 65 in particular may need B12 supplements because older patients'bodies have a harder time absorbing this vitamin.
Researchers looked at 121 participants in the Chicago Health and Aging Project. They looked at both serum levels of vitamin B12 and markers ofvitamin B12 deficiency.
The study found that a marker of vitamin B12 deficiency, is associated with a reduction of brain volume and so may contribute to cognitive problems. Homocysteine, an amino acidassociated with low B12 levels as well as folate, was linked to thinking problems through a different mechanism involving abnormal white matter signals (as seen on certain kinds of MRIs).
Summary:Scientists showed in 112 participants that markers of vitamin B12 deficiency are associated with reduction of brain size and thinkig problems. Vitamin B12 is important for myelin sheat.Reflexion: Impact in people and in the world. Healthy diet is important to avoid vitamin deficiency. We have to eat food with vitamine B12, like meats, fish, shellfish, dairy products, and some cerealsfortified with vitamin B12.
Also is important to give vitamin supplements to people with absortion problems, for example older tan 65 years, to avoid cognition problems.
Source: http:// cnn.com
Leer documento completo
Regístrate para leer el documento completo.