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.
1 Alzheimerâs disease âAlzheimerâs disease is the most common cause of dementia in people over 65, although the disease also occurs in people much younger. 2  Alzheimerâs affects approximately 50 percent of those over 85. 3  Presently, researchers cannot definitely say what causes the disease, and there is no cure.