Alzheimer’s Prevention

1. Beta-Amyloid Accumulation

Forms plaques between neurons, disrupting communication within the brain.

2. Tau Protein Tangles

Occurs inside neurons, blocking the normal transport of nutrients 

1. Inflammation

The brain enters a state of chronic inflammation, accelerating neuronal death.

What Are the Symptoms?

Early signs typically include:

• Forgetting recent conversations

• Asking questions repeatedly

• Misplacing items

• Difficulty finding the right words

• Difficulty learning new things

• Getting confused about dates

• Getting lost in familiar places

Later symptoms include:

• Difficulty cooking, paying bills, or driving

• Trouble recognizing family members

• Mood swings, aggressiveness, anxiety, and depression

• Delusions

In the final stages:

• Difficulty speaking and swallowing

• Inability to walk

• Total dependence on caregivers

Types of Alzheimer's

In clinical practice, the disease is usually classified by age of onset and cause:

• Late-Onset Alzheimer's: The most common form, accounting for over 90% of cases. It typically develops after age 65.

• Early-Onset Alzheimer's: Occurs before age 65. It is rarer and can have a strong genetic component.

• Familial Alzheimer's: Very rare and directly linked to inherited genetic mutations.

• Sporadic Alzheimer's: The most frequent form. It has no single cause, resulting instead from a complex interaction among genetics, age, and environmental factors.

Who Has the Highest Risk?

The primary risk factors include:

• Age: Risk increases significantly after age 65 and rises further after age 85.

• Family History: Having a parent or sibling with Alzheimer's increases your risk.

• APOE $\epsilon 4$ Gene: Carrying one or two copies of the APOE $\epsilon 4$ gene raises risk, but it does not guarantee that a person will develop the disease.

Other risk factors:

• Diabetes, hypertension, high cholesterol, and obesity

• Sedentary lifestyle, smoking, and excessive alcohol consumption

• Depression and untreated hearing loss

• Social isolation and low educational attainment

• Repeated head trauma

Can It Be Prevented?

Currently, there is no guaranteed way to prevent Alzheimer's. However, strong evidence shows that managing modifiable risk factors can lower overall risk.

Recommended Scientific Sources

The following organizations are reliable references for further reading:

• World Health Organization (WHO) – Dementia and brain health.

• Alzheimer's Association – Information for patients, families, and professionals.

• National Institute on Aging (NIA) – Research and guides on Alzheimer's.

• The Lancet Commission – Reports on modifiable risk factors.

• American Academy of Neurology (AAN) – Clinical guidelines for diagnosis and treatment.

Note: This guide offers a strong foundation, but can be expanded. A complete book or e-book on Alzheimer's typically covers topic areas such as the differences between Alzheimer's and other dementias, detailed disease stages, genetics, biomarkers, differential diagnosis, patient care, home adaptations, practical nutrition, tailored physical activities, caregiver mental health, ongoing clinical trials, and an exclusive chapter with over 200 annotated scientific references.

Footnotes

1* 150 Minutes of Moderate Aerobic Activity per Week

Aerobic exercises use oxygen to generate energy for the body and are typically performed over an extended period at a light-to-moderate intensity—such as running, walking, or cycling.

Also known as "cardio," aerobic exercise delivers significant health benefits: it improves heart and lung function, aids in weight management, increases daily energy, and enhances mental and emotional well-being.

It is recommended to engage in aerobic exercise for at least 30 minutes a day, five days a week. Exercise programs should ideally be guided by a fitness professional who can tailor activities to your age, fitness level, and physical limitations.

2* How to Replace Sugar?

Replacing added sugar can help reduce the risk of metabolic conditions like type 2 diabetes and obesity, which in turn are linked to a higher risk of cognitive decline and dementia. However, switching from sugar to an artificial sweetener alone has not been proven to prevent Alzheimer's. Maintaining an overall healthy dietary pattern is what matters most.