I think the normal life expectancy is around 111 years unless you eat wrong or fail to exercise.
Brain uses a huge amount of calories and needs good circulation to get enough blood to brain for energy and to clean out waste products and toxins.
Legs are part of the blood pumping system constant contractions during walking.
Like Einstein said "just take a little walk" when solving hard problems.
Walking grows the brain about 3% per year so by age 100 your brain will be 10 times as large exp(.03*100)
as young millennial transgenders who sit on their butts electronics + junk food.
Japanese live the longest
and eat the most seaweed, oysters, fish, rice, fermented soy products;
and sleep on the floor;
and wear flip flop sandals;
and live in small rabbit hutches crowded into big cities on their small island;
and walk most places or take bus, train, or drive small cars;
and go to bars and restaurants instead of watch TV;
and do not allow any immigration.
Japanese eat too much salt so get high blood pressure, stroke, and stomach cancer or they would live longer, etc.
Saunas up to 180 degrees have been shown to lower blood pressure and prevent dementia Alzheimers and other diseases.
Scandinavians have been using saunas for hundreds of years to compensate for the bad weather.
Humans are designed for running naked at noon in 100 degree weather to chase down and throw spears into large herbivores.
The only basic physical job humans can do better than animals is long distance running in heat.
Saunas the next best thing to kill off germs and sweat out toxins.
If you live in Las Vegas just walk around outdoors.
Problem with most big cities is the air has so much smog that it cancels the benefits of heat.
We are constantly raining, rarely hot.
This summer got up to 96 sunny a few times then dropped fast due to low humidity.
On humid cloudy days it feels much cooler and often 70s.
Even if 90 it feels like 70s due to no sun.
Now we are moving too quickly into fall 70s due to coming ice age.
People here do not get enough Vitamin D sunshine so they get sick depressed use drugs alcohol tobacco pot.
Vitamin D pills made in communist China without inspection
no legal requirement they include any Vitamin D,
and no enforcement or tests.
Better to get real sun additional benefits.
Many use sauna and tanning beds around here but not the same as real sun.
Why Hawaii lives longer is more sun, less cold, heat, and smog.
Why so many retire in Florida on the beach is more sun and less cold ice snow and less heat and smog than many areas.
+ real natural orange juice local fresh Vitamin C not cheap communist crap.
Aging people grow just as many new brain cells as young people
5th April 2018
Our brains keep making new neurons throughout our lifespan,
a quality unique to humans.
A newly released study is the first to show that healthy older people continue to produce new brain cells.
Researchers autopsied 28 healthy brains donated by people who had no neuropsychiatric disease or treatment affecting the brain.
The fact that neurogenesis – the process by which neurons
or nerve cells are generated in the brain –
continues as people get older
means researchers are
better equipped to understand why things can go wrong as we age, like with dementia or Alzheimer's
We spoke to lead author Maura Boldrini,
associate professor of neurobiology at Columbia University,
about the work.
What motivated this study?
Maura Boldrini: We were interested in understanding if neurogenesis persists in people who are
aging, have no disease affecting the brain, and no cognitive impairment.
No previous study has
looked at neurogenesis in humans who had no neuropsychiatric disease or treatment at time of
death, and studies in mice showed that neurogenesis declines after middle age.
Humans have much more complex learning abilities and emotional responses than rodents,
both of which may depend
A smaller hippocampus with aging was also hypothesized based on in vivo imaging studies.
RG: Can you tell us what you discovered?
Boldrini: We found that neurogenesis does not decline with aging,
nor does the volume of the dentate gyrus,
part of the hippocampus thought to contribute to the formation of new episodic memories.
Instead, it's the formation of blood vessels that seems to decline with aging.
Some forms of plasticity might be blunted as well,
as the number of cells expressing the plasticity marker PSANACAM decline.
This may mean that these neurons could be making fewer connections and are less active in the circuit.
RG: What does the ability to grow new brain cells do for us?
Boldrini: New neurons in the hippocampus are necessary for memory and emotional responses to stress.
Our brain keeps making new neurons throughout our lifespan, and this is unique to humans.
These neurons might be important for humans to transmit complex information to future generations,
and to sustain our emotionally guided behavior,
as well as integrating complex memories and information.
RG: Where did the belief that older adults don't grow new brain cells come from?
Boldrini: Previous negative studies have come as a result of a few factors.
One is the availability of only portions of the hippocampus, so the total number of cells could not be calculated.
RG: What do your results mean for our understanding of aging in humans?
Boldrini: This means that with a healthy lifestyle, enriched environment, social interactions, and
exercise, we can keep these neurons healthy and functioning and sustain healthy aging.
We can also study what goes wrong when people experience memory loss, dementia or emotional problems.
We hope to find new treatments that can sustain these neurons and the vascularization of the brain and cure these conditions.
RG: What's next for your research?
Boldrini: We are interested in understanding how
and survival are
regulated by trophic factors,
and other molecules.
This could help us find treatments for cognitive impairment or dementia.
We are also interested in comparing these findings obtained in healthy aging individuals
with people with cognitive impairment,