To be effective, the spermicide must be placed deep in the vagina, close to the cervix. Creams, gels, and foams are squirted into the vagina using an applicator. Other types of spermicides include vaginal contraceptive film (VCF), a thin sheet placed in the back of vagina by hand, and vaginal suppositories.
Causes of Alzheimer's disease. Alzheimer's disease is caused by parts of the brain wasting away (atrophy), which damages the structure of the brain and how it works.
Dementia can be caused by a wide variety of conditions or diseases. The most common cause of dementia is Alzheimer's disease, which progressively damages and destroys such cognitive processes as memory, orientation, and speech. The second most common cause of dementia is vascular dementia.