Dementia is a large umbrella term which includes not only Alzheimer's but also vascular dementia and other debilitating diseases. We do know there are more than 5.7 million Americans with Alzheimer's Disease. One person develops the disease every 66 seconds. It is also the 6th leading cause of death in the USA. Of course I would be worried and I would be reading everything associated with lifestyle changes that can help. These would involve both exercise and lifestyle changes as well as any supplement or herb that might help.
There are about 10 treatable conditions that can trigger dementia symptoms. These include very simple treatable topics. One is medications. Many individuals are on too many conventional medications and poly medicine which all can affect the memory and mimic dementia symptoms. Other treatable disease which trigger dementia symptoms as urinary tract infections, hearing loss, and trauma.
Nutritional deficiencies mimic dementia symptoms - especially B12 and folate deficiency. Sticking to a mind dietary lifestyle is associated with a 30-35 % lower risk of cognitive impairment. We all need to eat better.
Other conditions that are treatable which mimic dementia are alcohol abuse, diabetes, and depression.