Many older adults are diagnosed with mild cognitive impairment (MCI), a condition that does not meet the criteria for dementia. MCI is considered a risk factor for Alzheimer’s disease-related disorders (ADRD). Although Alzheimer’s disease is a serious problem, this chapter focuses on the five types of dementia commonly seen in practice. These include vascular dementia, dementia with Lewy bodies, Korsakoff syndrome, frontal lobe dementia (including Pick’s disease), and Alzheimer’s disease. Psychoeducational support groups allow the merging of learning about dementia with concomitant psychological support. The breaking of denial enables older adults in these support groups to make better sense of their disease, increasing their abilities to comply with treatments and caretakers. Leisure activities, whether community based or solitary, are shown to be protective against dementia or, at the least, stall the onset of dementia.