Amost no one in India gets it.
Incidence of alzheimer’s is much higher in south India than in the rural North. In the South it is comparable to other countries.
Interesting. Did some cursory research.
India has a tad less dementia cases than the U.S. yet they have a billion more people.
Only 5% of alzheimers occurs ( diagnosed ?) prior to 65 years of age.
Symptoms to diagnosis is approx. 3 years.
How much does age factor into it ? It has to count for something.
Alzheimer’s is still an older peoples disease, so I started looking at life expectancy. ( Japan doesn’t fit )
Life expectancy in India is approx. 69 years. Approx. 4 million dementia\alzheimers cases in India.
Life expectancy in U.S. is approx. 79. Approx. 5.5 million dementia\alzheimers cases in the .U.S. with 5.3 million 65 years or older.
Life expectancy in Japan is almost 84 years. Japan has 124 million people and 4.4 million have dementia.
Life expectancy in Nigeria is 53 years. Nigeria has 186 million people. They have a low death rate for dementia\alzheimers - 3.29 per 100,000 ( I haven’t been able to quickly find hard figures)
Some people just don’t live long enough to have it diagnosed. ( Kinda like cancer in the U.S. in the 1800’s and early 1900’s )