Background: At present 34 million people live with Alzheimer's disease around the world. This figure is expected to triple in the next 40 years. The major cause of this increase is the well-known aging of the society in Europe and in the US as well.
Aims and methods: In this paper we review the results of the last 10 years, and discuss those pharmaceutical and other methods, which can be effective in the prevention of dementias.
Results: The most important pharmaceutical agents are beta secretase inhibitors, and active and passive immunizations. Several drugs in these groups are in phase III at the moment. The results from studies with intranasal insulin are also encouraging. As a non-drug option Mediterranean diet can be effective. However at present cognitive trainings seem to be the most effective in the prevention of dementias. These remediation therapies are based on the lifelong plasticity of the human brain.
Conclusions: In summary we can conclude that there are promising drug developments in progess for the prevention of dementias, but the breakthrough has not been achieved yet. At present the best option is decreasing risk factors, that is treatment of hypertension, prevention of obesity and diabetes, and cognitive trainings are recommended for prevention.