Alzheimer's disease

 What is Alzheimer"s Disease?

Alzheimer's disease is a progressive neurological disorder that causes the brain to contract (atrophy) and kill brain cells. Alzheimer's disease is the most common cause of dementia — a continuous decline in thinking, behavior, and social skills affects a person's ability to function independently. 

Alzheimer"s Disease

Condition Of Alzheimer"s Disease:

 In the United States, about 5.8 million people over the age of 65 have Alzheimer's disease. Of these, 80% are over 75 years old. It is estimated that 60% to 70% of the approximately 50 million people with dementia worldwide have Alzheimer's disease. 

 One of the early signs of this illness is forgetting recent events and conversations. As the disease progresses, people with Alzheimer's develop severe memory problems and lose the ability to do their daily work. 

 medications may temporarily improve or slow the progression of symptoms.

Progression Of Alzheimer"s Disease

   These treatments may help people with Alzheimer's to maximize their function and maintain their independence for some time. Various programs and services can help people with Alzheimer's disease and their caregivers. 

 There is no cure for Alzheimer's disease or change in the progression of brain disease. As the disease progresses, complications from severe loss of brain function, such as dehydration, malnutrition, and infections, can lead to death.

Symptoms :

Memory loss is the main symptom of Alzheimer's disease. The early signs are that it's hard to remember recent events and conversations. As the illness progresses, memory problems worsen and other symptoms appear. 

 At first, people with Alzheimer's disease may find it difficult to remember things and organize their thoughts. Family and friends are more likely to notice that their symptoms are getting worse. 

 Brain changes associated with Alzheimer's disease lead to an increase in the following problems:

Memory 

 Everyone has occasional memory lapses, but the memory loss associated with Alzheimer`s disease persists and worsens, affecting the ability to function at work or home. 

 People with Alzheimer's may: 

•  Repeat statements and questions over and over 
•  Forget conversations, appointments, or events, and not remember them later 
•  Routinely misplace possessions, often putting them in illogical locations 
•  Get lost in familiar places 
•  Eventually, forget the names of family members and everyday objects 
•  Have trouble finding the right words to identify objects, express thoughts, or take part in conversations 
•  Thinking and reasoning 

 Alzheimer's disease causes difficulty concentrating and thinking, especially about abstract concepts such as numbers. 

 Multitasking is especially difficult, and it may be challenging to manage finances, balance checkbooks, and pay bills on time. Eventually, a person with Alzheimer's may be unable to recognize and deal with numbers.

 

Multitasking

   Making judgments and decisions 

 Alzheimer's causes a decline in the ability to make reasonable decisions and judgments in everyday situations. For example, a person may make poor or featureless choices in social interaction or may wear clothes that are inappropriate for the weather. It can be more difficult to effectively address everyday problems such as B. Burning food on the stove or unexpected driving conditions. 

 Schedule and run familiar tasks 

 Routine activities that require a series of steps, such as planning and cooking meals and playing your favorite games, struggle as the illness progresses. Finally, people with advanced Alzheimer's disease tend to forget basic tasks such as changing clothes and bathing.

Illness

Causes:

The exact cause of Alzheimer's disease is not fully understood. However, at a basic level, proteins in the brain do not function properly, interfering with the work of brain cells (neurons) and causing a series of toxic events. Neurons are damaged, lose connectivity, and eventually die. 

 Scientists believe that  Alzheimer's disease in most people is caused by a combination of genetic, lifestyle, and environmental factors that affect the brain over time. In less than 1% of cases, Alzheimer's disease is caused by certain genetic changes that effectively guarantee that a person will develop the disease. These rare events usually lead to the onset of middle age. 

 Injuries most often begin in the areas of the brain that control memory, but this process begins years before symptoms appear. Neuronal loss spreads to other areas of the brain in a somewhat predictable pattern. In the late stages of the disease, the brain shrank significantly.  Researchers trying to understand the cause of Alzheimer's disease are focusing on the role of two proteins: 

 plaque.

 Beta-amyloid is a larger fragment of the protein. When these fragments aggregate, they appear to have toxic effects on neurons and interfere with cell-cell communication.

Beta-Amyloid 

  These clusters form larger deposits called amyloid plaques, which also contain other cell debris. Entanglement. Tau protein plays a role in the internal support and transport system of neurons, carrying nutrients and other essential substances. In Alzheimer's disease, tau protein changes shape and is organized into structures called neurofibrillary tangles.

 Tangles disrupt the transport system and are toxic to cells.

Risk Factors:

Year 

 Aging is the greatest known risk factor for Alzheimer's disease. Alzheimer's disease is not part of normal aging, but as you get older, you are more likely to develop Alzheimer's disease. 

 One study, for example, makes four new diagnoses per 1,000 people aged 65-74, 32 new diagnoses per 1,000 people aged 75-84, and 76 new diagnoses per 1,000 people aged 85 and over each year. I found out. 

 Family history and genetics 

 If a first-degree relative (parents or siblings) has Alzheimer's disease, the risk of developing Alzheimer's disease is slightly higher. Most of the genetic mechanisms of Alzheimer's disease in the family remain largely unexplained, and genetic factors can be complex. A better-understood genetic factor  

 is a type of apolipoprotein E gene (APOE). Variations in the gene APOEe4 increase the risk of Alzheimer's disease. About 25% to 30% of the population carry the APOE e4 allele, but not all people with this gene mutation develop the disease. 

 Apolipoprotein E gene (APOE)

  Scientists have identified rare changes (mutations) in three genes that effectively guarantee that one inheritor will develop Alzheimer's disease. However, these mutations make up less than 1% of people with Alzheimer's disease. 

 Down Syndrome 

 Many people with Down syndrome develop Alzheimer's disease. This is probably because there are three copies of chromosome 21, followed by three copies of the gene for the protein that leads to the formation of beta-amyloid. Signs and symptoms of Alzheimer's disease usually appear 10 to 20 years earlier in people with Down syndrome than in the general population. 

 

 There does not seem to be a big difference in risk between men and women, but overall there are more women with this disease because they generally live longer than men. 

 Mild cognitive impairment 

 Mild cognitive impairment (MCI) is a decline in memory and other thinking skills that is greater than normal in age, but the decline can interfere with functioning in a social or professional environment. There is none.

Mild Cognitive Impairment MCL

  People with MCI are at significant risk of developing dementia. If the major MCI deficiency is memory, the condition is more likely to develop into dementia due to Alzheimer's disease. MCI diagnosis encourages a further focus on healthy living, developing strategies to compensate for memory loss, and scheduling regular doctor appointments to monitor symptoms. 

 Head injury 

 People with severe head injuries are at increased risk of Alzheimer's disease. Several large studies have found that people over the age of 50 with traumatic brain injury (TBI) are at increased risk of dementia and Alzheimer's disease. People who are more severe and have multiple TBIs are at increased risk. Some studies suggest that risk can be maximal in the first 6 months to 2 years after  TBI. 

 Air pollution 

 Animal experiments have shown that air pollutant particles can accelerate the degeneration of the nervous system, and human studies have shown that exposure to air pollutants 

 is specifically caused by traffic exhaust and the burning  

 of wood. I know.

Complications:

Memory and language loss, impaired judgment, and other cognitive changes caused by Alzheimer`s can complicate treatment for other health conditions. A person with Alzheimer's disease may not be able to: 

 Communicate that he or she is experiencing pain 

 Explain symptoms of another illness 

 Follow a prescribed treatment plan 

 Explain medication side effects 

 As Alzheimer's disease progresses to its last stages, brain changes begin to affect physical functions, such as swallowing, balance, and bowel and bladder control. These effects can increase vulnerability to additional health problems such as: 

 Inhaling food or liquid into the lungs (aspiration) 

•  Flu, pneumonia, and other infections 
•  Falls 
•  Fractures 
•  Bedsores 
•  Malnutrition or dehydration 
•  Constipation or diarrhea 
•  Dental problems such as mouth sores or tooth decay 

Mouth Sores 

Prevention:

 Alzheimer's disease is not a preventable condition. However, many lifestyle risk factors for Alzheimer's can be modified. Evidence suggests that changes in diet, exercise, and habits — steps to reduce the risk of cardiovascular disease — may also lower your risk of developing Alzheimer's disease and other disorders that cause dementia. Healthy heart lifestyles that may reduce your risk of Alzheimer's disease include: 

 Regular physical activity 

 Eat fresh produce, healthy oils, and foods low in saturated fat. B. Mediterranean diet 

 Follow treatment guidelines for treating high blood pressure, diabetes, and high cholesterol 

 If you smoke, ask your doctor for help in quitting smoking  

 Studies show that maintaining thinking skills and reducing the risk of Alzheimer's disease in later years requires social events, reading, dancing,  board games, art production, musical instrument playing, and other intellectual and social involvement. It is related to participation in the activity.

 Cardiovascular disease

Based on the intensity of  typical Alzheimer's disease symptoms, it can be divided into the following subtypes: 

 This includes difficulty remembering daily life such as developing cognitive impairment, work chores, and bill payments. These symptoms are less severe and patients at this stage can manage to maintain function. It takes time to do the same tasks they were doing faster than before, and this is the pattern. 

 Moderate Alzheimer's disease 

 Due to severe nerve damage, the symptoms of moderate Alzheimer's disease are more severe. 

 Moderate Alzheimer's disease 

The confusion is exacerbated and they become more and more dependent on others because of memory loss. Although these individuals are physically mobile, they are unable to perform routine tasks because delusions take over the sensory processing of thoughts. 

 Severe Alzheimer's disease

 When plaques and nodules expand, brain cells begin to die. This causes the brain tissue to contract. Patients in this condition are usually bedridden and have difficulty communicating. 

Severe Alzheimer's Disease

 These subtypes resemble the stage of the disease and often progress to mild to severe morphology. The earlier a  patient is diagnosed with the condition, the more likely it is to treat and prevent its progression. Classification is based on the inflammatory response.

 Alzheimer's disease is divided into three subtypes based on the inflammatory response. 

 Inflammation In addition to behavioral and cognitive symptoms, this subtype exhibits high serum albumin to globulin ratios and high levels of C-reactive proteins in response to inflammation. 

 Non-inflammatory 

 This subtype of Alzheimer's disease does not show elevated inflammatory biomarkers. However, other metabolic disorders are usually associated with this condition.

 Cortex 

 Cortical subtypes are caused by zinc deficiency in different areas of the brain. There is no inflammatory response associated with this subtype, but it causes abnormalities in normal brain function that lead to Alzheimer's disease. 

 Classification based on start or trigger type 

 Early-onset Alzheimer's disease 444 A subtype of Alzheimer's disease that affects people under the age of 45 is called early-onset Alzheimer's disease. This condition is extremely rare (5 out of 100 Alzheimer's disease patients). Changes usually appear when the patient reaches his or her late 40s or early 50s. An important feature of this condition is believed to be due to a defect in chromosome 14.

 Late-onset Alzheimer's disease 

 The majority of Alzheimer's disease is late-onset and affects people over the age of 65. The exact genetic trigger has not yet been identified. However, scientists have identified some risk factors and more research is underway. 

 Another subcategory of this disease is familial Alzheimer's disease (FAD). This condition is extremely rare (1 in 100). FAD can only be diagnosed if the clinical picture of a particular genotype is characterized by the family and the exact risk can be predicted. 

 Alzheimer's disease can impair a patient's cognitive, physical, and social skills. Early detection of illness is very important.

 familial Alzheimer's disease (FAD)