Dementia: Types, Causes & Symptoms

by Meenakshi Nagdeve last updated -

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Dementia is a broad term comprising a number of neurocognitive impairments, most famously Alzheimer’s disease. Let’s understand the types, causes, and symptoms of this complex condition.

What is Dementia?

Essentially, dementia refers to the brain’s gradual decline in functionality and ability to remember. This is a gradual, degrading disease, and typically renders the sufferer unable to take care of themselves in the later stages.


Some of the other conditions associated with this type of cognitive decline include:

  • Alzheimer’s disease
  • Vascular
  • Dementia with Lewy bodies (DLB)
  • Mixed
  • Parkinson’s disease
  • Frontotemporal
  • Creutzfeldt-Jakob disease
  • Normal pressure hydrocephalus
  • Huntington’s disease
  • Wernicke-Korsakoff Syndrome

A confused old man suffering from dementia looking at the calendar on the wall


This condition is primarily caused due to damaged brain cells, there are also some other causes like:

  • Depression
  • Marital status of widowed
  • Lower BMI
  • Less sleep at mid-life
  • Medication side effects
  • Too much sitting
  • Excessive consumption of alcohol
  • Thyroid imbalances
  • Vitamin deficiencies


Depending on the type, the symptoms can vary greatly. The general symptoms impaired in the core cognitive functions include:

  • Short- and long-term memory
  • Communication and language
  • Behavioral changes
  • Ability to concentrate
  • Logic and reasoning
  • Sensory perception Protection Status
About the Author

Meenakshi Nagdeve, Co-Founder, Organic Facts is a health and wellness enthusiast and is responsible for managing it. She has completed the Nutrition And Healthy Living Cornell Certificate Program, Cornell University, US. She holds a Post Graduate Diploma in Management from IIM Bangalore and B. Tech in Metallurgical Engineering and Materials Science from IIT Bombay. Prior to this, she worked for a few years in IT and Financial services. An ardent follower of naturopathy, she believes in healing with foods. In her free time, she loves to travel and taste different types of teas.

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