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Los resultados se han presentado en la VIII Conferencia Internacional sobre Enfermedad de Alzheimer y Trastornos Relacionados, que se desarrolla en Estocolmo (Suecia).
En opinión de los autores, los dos factores citados son tan importantes como los factores genéticos que se han relacionado con la enfermedad. En la investigación participaron 1.449 individuos que fueron seguidos desde 1972. Señalan que las personas portadoras del gen de la apolipoproteína E-e4 presentan un riesgo duplicado de desarrollar Alzheimer respecto a los individuos sin predisposición genética. Pero si además estos portadores del gen son hipertensos, su riesgo se multiplica por cinco, y si además presentan elevados niveles de colesterol, su riesgo es ocho veces mayor que el de las personas sin el gen.