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.
Some forms of dementia are reversible, some are not. Alzheimer disease is, in part, caused by the development of things called neurofibrillary tangles in brain cells that edge out what is otherwise supposed to be there. There is a genetic component to Alzheimer disease as well.lzheimer disease is, in part, caused by the development of things called neurofibrillary tangles in brain cells that edge out what is otherwise supposed to be there. There is a genetic component to Alzheimer disease as well.