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.
Possible causes of dementia include: 1  Alzheimerâs disease, which is the leading cause of dementia. 2  brain damage due to injury or stroke. 3  Huntingtonâs disease.  Lewy body 1  dementia. frontotemporal dementia.