Is Alzheimer's disease caused by brain inflammation and oxidative stress?

Is Alzheimer's disease caused by brain inflammation and oxidative stress?

When we see someone in our family, perhaps our beloved mother, father, grandmother, or grandfather, gradually forget things as they age, we feel a little scared and sad, don't we? There are times when we wonder, "Is this the beginning of Alzheimer's disease?" This is a question that many people have. So today, let's talk very simply and kindly about Alzheimer's disease, about the newly discovered causes that affect it, and most importantly, about the things we can do to protect ourselves from this condition.

What exactly is Alzheimer's disease?

Simply put, Alzheimer's is not an overnight disease. It is a condition that develops very slowly, over many years, inside our brains. Sometimes, changes in the brain can start as early as 10 years before you even start to notice symptoms.

According to scientists, the main reason for this is the unnecessary accumulation of two types of proteins between brain cells.

1. Beta-amyloid plaques: These are like protein 'clots' that accumulate between brain cells.

2. Tau tangles: These are protein 'tangles' that form inside brain cells.

Think of it this way: our brain cells are like people who need to talk to each other and exchange information. These protein clumps and tangles prevent those cells from communicating with each other. Over time, these brain cells gradually die. That's when our ability to think, remember, and reason diminishes.

What are the risk factors that affect this?

There are certain factors that contribute to the development of Alzheimer's disease. Some of these we can control, some we cannot.

The most important thing is to talk to your family doctor about it and seek advice if you find out you have these risk factors.

Risk factor Simple explanation
Aging The risk increases after the age of 65. But this is not a normal part of aging.
Family history (Genetics) If someone in your family (mother, father, sibling) has had this disease, you are also at slightly higher risk.
High blood pressure Uncontrolled high blood pressure can damage the brain.
High cholesterol This also affects the brain through the blood vessels.
Diabetes Uncontrolled diabetes significantly increases the risk of Alzheimer's.
Smoking The toxins in cigarettes are directly harmful to brain health.
Obesity The changes in the body caused by excess body weight also affect the brain.

Now scientists say that Alzheimer's disease, like many of these risk factors, is also influenced by two other processes within our bodies: oxidative stress and chronic inflammation .

What is Oxidative Stress?

Don't be scared when you hear this name. It's very simple.

Our body's cells constantly produce harmful particles called free radicals . They are also introduced into the body from external factors such as smoking and air pollution.

However, our bodies also have some good "soldiers" that destroy these harmful particles. We call them antioxidants .

Oxidative stress is when the amount of free radicals exceeds the amount of antioxidants. It's like a scale being tipped to one side. This imbalance damages our cells and accelerates the aging process. This opens the door to many diseases, not just Alzheimer's, but also Parkinson's, cancer, and heart disease.

Surprisingly, the protein called beta-amyloid that causes Alzheimer's also acts as an antioxidant. But when oxidative stress increases, a faulty, harmful copy of that same protein starts to form. That's what accumulates in the brain and causes problems.

How does inflammation affect the body?

Inflammation is actually a defense mechanism in our body. Imagine if you cut your hand and it turns red, swollen, and hot, right? That's inflammation. It's what the body does to fight germs and heal the wound.

However, if this inflammation continues, that is, if it becomes chronic inflammation , it is just like a security guard in the house who keeps disturbing the house and causing damage to the house itself.

This is what happens in Alzheimer's disease. This chronic inflammation in the brain causes the beta-amyloid plaques and tau tangles we talked about earlier to become worse. This increases the damage to brain cells.

What can we do to control these situations?

The good news is that we can control oxidative stress and chronic inflammation by making lifestyle changes, which means we have a lot of power in our own hands to reduce our risk of Alzheimer's.

What to do Why and how to do it?
Avoid smoking. Cigarettes are a storehouse of free radicals. Quitting smoking can directly reduce the risk of Alzheimer's.
Limit alcohol. Heavy alcohol use accelerates brain aging. Moderate drinking is defined as one drink (e.g., a can of beer) per day for women and two for men.
Healthy diet Eat fruits, vegetables (especially leafy greens), and foods rich in antioxidants (vitamins C and E). Oily fish like salmon and olive oil reduce inflammation. Avoid fried and processed foods.
Try probiotics. The good bacteria in our gut are also important for brain health. Include things like yogurt and cow's milk in your diet.
Exercise. Exercise 3-5 days a week for 20-30 minutes. Even brisk walking or gardening is good exercise. Don't overexert yourself, as this can increase the production of free radicals.
Maintain a healthy weight. Obesity causes inflammation throughout the body. It also affects the brain.
Reduce stress. Stress is a major cause of inflammation and oxidative stress. Things like yoga, meditation, and deep breathing exercises can help.
Get enough sleep. The brain clears out those unwanted beta-amyloid plaques while we sleep. Getting a good night's sleep every day is essential.

Take-Home Message

  • Alzheimer's is not just a case of forgetting things as we age, it is the result of a series of complex changes that occur in the brain.
  • Oxidative stress and chronic inflammation are two of the main suspects in this disease.
  • Your lifestyle is your best protector. You can significantly reduce your risk by eating a healthy diet, exercising, avoiding smoking, managing stress, and getting enough sleep.
  • If you or a loved one has any concerns about memory problems, please do not be afraid or embarrassed to talk to your doctor . It is very important to seek advice early.

Alzheimer's disease, memory loss, oxidative stress, inflammation in the body, healthy lifestyle, brain health, aging

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