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Research suggests new experiences could create more time codes in the human brain as it processes memory formation.
This could mean that people who can afford to enjoy more vacations and hobbies and have more stimulating jobs, will recall having lived for a longer time.
People tend to create internal narratives about themselves - a life full of rich and varied experiences will likely have a satisfying quality to it in retrospect. Having more control over your time can lead to more novel memories.
People from all socio-economic levels could derive enjoyment and satisfaction, for example, by painting houses or gardening. Higher-paid jobs can lead to more new experiences, but wealthy people may spend money on a fancy watch instead, which will not have the same change to the perception of time as a vacation.
Age is also a wealth-dependent factor in how we experience subjective time. A young person's eye will jiggle regularly to take in new stimuli. As a person ages, the eye muscles grow slower, and the brain receives less input. The brain also grows accustomed to a certain amount of stimuli, and the small amount received in old age leaves a person feeling that the days are too short.
For a rich person, taking a vacation to an exotic place may slow time down for a while, but can lose its charm and feel that a day has come to an end too soon. People with less money have fewer chances and resources to escape the monotonous parts of their lives.
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When you consume too much sugar, you could develop resistance to insulin, the hormone responsible for regulating the function of brain cells.
When you eat too much sugar, your blood sugar levels peak and drop. This causes you to experience irritability, mood swings, brain fog, and fatigue. You may find yourself feeling anxious or depressed. Carb-laden foods create the same response.
Chronically high blood sugar levels are linked to inflammation in the brain, which may be a cause of depression.
We hold on to different kinds of memories.
By studying people with amnesia, it seems that short-term and long-term memories don't form in precisely the same way, nor do declarative and procedural memories.
Memories are held within groups of neurons called cell assemblies. They fire as a group in response to a specific stimulus, such as recognising your friend's face.
The more neurons fire together, the more the interconnection of the cells strengthen. We experience the nerves' collective activity as a memory.
A diet high in saturated fats and sugars affects your blood pressure, cholesterol, and blood sugar levels. It also affects the parts of the brain that are important to memory.
Obese people find it more difficult to pick apart spatial, item, and temporal memory, as well as the ability to integrate them.
If you're obese, you might be up to 20 percent more likely not to remember where you put your keys.