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What is Diabetes?
A diabetes is a disease which impact on human overall health. A human body produces some hormone insulin which is important for body. Diabetes causes to impair this features from producing hormone insulin inside body. A diabetes also considered a life-long health conditions because the amount of glucose increases in our blood and this make our body weaker and the ability to produce or respond to the hormone insulin reduces.

Types of Diabetes
There are two types of diabetes such as Type 1 and Type 2. In type 1 the condition where body attacks and destroy insulin-producing cells meaning no insulin is produces which causes rise glucose level in blood.

On other hand in type 2 the body doesn’t make enough insulin, meaning glucose builds up in the blood. Type 2 diabetes cases can be delayed with changes healthy lifestyle

Diabetes can impact human whole body and particularly it effect on our brain, eyes, oral, heart, stomach, kidney, sexual dysfunction, nerve and foot as well. So, this means diabetes is a major contribution to our health issues which need to be understand and take care of health issues seriously.

Cognitive Function
It is a collection of intellectual activities which provides more knowledge and information. Cognitive function includes memory, attention and reasoning and also important in our increasing knowledge. Cognitive function is important for human in their mood development such as he is happy, or sad. Also, cognitive function important for the human physical health as well. Cognitive function have two major function such as perceiving and judging. Perceiving is related to human sensing and intuition capabilities while judging directly link with human thinking and feeling capabilities. Therefore, if diabetes impact on the cognitive function this also impact on our thinking, feeling, sensing and intuition capabilities as well.

Brain is an important part of our body which constantly supply oxygen and glucose to maintain the energy generation processes. There are three major parts such as forebrain, midbrain and hindbrain. This is how it maintain its physiology.

Impact of diabetes on the cognitive function
In research it is found that both type 1 and 2 are directly or indirectly associated with mild to moderate decrements in cognitive functions. In simple words, the cognitive functions which we discussed in early slides, reduces its capabilities due to diabetes. It is found that both type 1 and type 2 have been associated with the impact on cognitive function and its performance specifically with evidence of functional brain magnetic resonance imaging (MRI). There is large number of researches has been conducted on the issue of diabetes directly linked with cognitive impairment. The major study has found that diabetes can cause cognitive deficit in very early stages and this can further exacerbated by the metabolic syndrome.

Diabetes also linked with mental declines as well. It is also because when cognitive main functions such as thinking, sensing, intuitions, and feeling capabilities reduces this will directly impact on our mental health as well.

Type 1 diabetes impact on cognitive performance. The following are the major impact on cognitive function because of type 1 diabetes.
 * The magnitude of the cognitive deficits is mild to moderate, but even mild forms of cognitive dysfunction might hamper everyday activities since they can be expected to present problems in more demanding situations.

Type 2 diabetes also impact on human cognitive function. The following are the major impact on cognitive function because of type 2 diabetes:


 * Type 2 diabetes has been established as an independent risk for the development of both cognitive impairment and dementia.
 * Inflammation and decline in blood flow regulation in brain and cognitive.

Diabetes damages our brain structure and cognitive functions. It is also associated with an increased risk of dementia. Therefore, the diabetes is also directly or indirectly linked with dementia in both animal and human. The risk of dementia can further lead to causes impaired attention, motor speed, and processing, functioning and verbal memory. Dementia is not a disease itself but rather a collection of symptoms that result from damage to the brain caused by different diseases, such as Diabetes. These symptoms vary according to the part of the brain that is damaged. Dementia is a chronic or persistent disorder of the mental processes caused by brain disease or injury and marked by memory disorders, personality changes, and impaired reasoning.

Diabetes related cognitive dysfunction is always a challenging and demand very careful treatment with future health resources because if not handle at early stages can cause prevalence of Type 2 diabetes and prolonged life-span. Therefore, it is an urgent need to understand the pathophysiology and identify the molecular targets and pathways which can lead to improved therapy.

There are different therapies such as anti-oxidants, anti-inflammatory medication can be useful in animal uses. Early stages of the diabetes treatment is also benefit to control in human. Many health practitioners strongly suggest a proper health care through exercise and healthy diet can help patient to reduce the level of impact on human cognitive function and remain healthy.

Conclusion
Therefore, this report briefly discussed about diabetes and its types 1 and 2. Both diabetes is major risk factor for the development of dementia. It have negatively impact on cognitive function and brain structure. Further, the disease also related to damage to blood vessels may also lead to cognitive problems. The brain is normally dependent on glucose for oxidative metabolism and function. Acute iatrogenic hypoglycaemia, occurring as a result of insulin excess during the treatment of type 1 diabetes, can cause clinically significant cognitive impairment. High blood glucose levels, over a number of years, which can also cause damage the nerves, including those of the brain, which increases the risk of dementia. Moreover, extremes level of blood-sugar cause significant mood changes in human. Also, depression has long been linked to diabetes.