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.
Alzheimer's disease. Alzheimerâs disease is the most common type of dementia. Between 60 and 80 percent of cases of dementia are caused by this disease, according to the Alzheimerâs Association. Early signs of Alzheimerâs disease include depression and forgetting names and recent events. Alzheimerâs causes brain cells to die.