Saturday, January 03, 2026

Health coach shares 5 longevity hacks to support long-term brain health and lower the risk of Alzheimer's disease

Simple daily habits can not only improve your present brain health, but can add up over the years and lower cognitive decline in old age. 

Alzheimer’s disease and dementia don’t suddenly appear in old age - they are often the result of decades of small, everyday habits quietly adding up over time. The choices you make today around food, sleep, movement and inflammation can shape how well your brain functions years from now. By prioritising brain health early, you’re not just improving how you think and feel in the present - you’re investing in a sharper, healthier future that your 80-year-old self may one day thank you for.

Alejandra Ruff, an integrative nutrition health coach specialising in women’s longevity, chronic disease prevention and brain health, has shared five science-backed longevity strategies designed to support cognitive function and reduce the risk of Alzheimer's disease.

In an Instagram video shared on December 15, the health coach explains, “Dementia doesn’t begin when you’re old. It begins decades before you ever feel a symptom. And while that sounds terrifying…it’s actually the most empowering truth you’ll hear today: Your brain’s future isn’t fixed. You can change your trajectory - starting right now.”

Prioritise omega-3s

Alejandra advises prioritising omega-3 rich foods - such as fatty fish like sardines and salmon, along with nuts and seeds like chia, flaxseeds and walnuts - almost as if it were your job, noting that they play a key role in supporting brain health and calming inflammation.

She explains, “Your brain is 60 percent fat, and omega-3s are the raw materials it needs to repair, protect, and stay sharp. EPA and DHA literally build your brain cells and calm inflammation - two things that matter for dementia risk.”

Treat sleep like brain-washing

According to the health coach, sleep acts like a deep cleansing cycle for the brain, clearing out metabolic waste - including proteins linked to Alzheimer’s disease - that accumulate during the day and are flushed out while you sleep.

She explains, “While you sleep, your brain flushes out waste - including the proteins linked to Alzheimer’s. If you skip sleep, that waste doesn’t get cleared. Your nighttime routine is not a luxury. It’s a neuroprotective strategy.”

Avoid spiking blood sugar frequently

Alejandra warns against repeatedly spiking blood sugar throughout the day, noting that frequent glucose highs and crashes can accelerate brain ageing and impair long-term cognitive health. She highlights, “Glucose spikes equals inflammation, energy crashes, mood swings, and faster brain ageing. Balanced blood sugar keeps your mind clear and your neurons happy.”

The health coach recommends always prioritising proteins and fibres, along with some form of movement after meals to balance out glucose spikes.

Move every 2-3 hours

According to Alejandra, regular movement is essential for brain health and shouldn’t be limited to a single 30-minute workout. She emphasises the importance of moving your body every two to three hours throughout the day to support overall brain wellbeing.

 

 

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.   

 

 

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posted by G S Iyer at 9:46 AM 0 comments

Lutein: Health Benefits and Top Food Sources

 Lutein is a type of carotenoid that has antioxidant properties and can provide various health benefits.

The most researched benefit of lutein is related to eye health, but it has also been linked to heart health, improved cognitive function, and reduced risk of certain types of cancer.

This article explores everything you need to know about lutein, including food sources of it, supplements, health benefits, and potential risks.

Lutein is a xanthophyll, or an oxygen-containing carotenoid. Carotenoids are responsible for the naturally occurring yellow, orange, and red pigments found in foods. They are considered an essential nutrient — since our bodies can’t make them, we must get them through food .

There are two types of carotenoids. Xanthophylls, which contain oxygen and usually contribute to yellow pigments, and carotenes, which don’t contain oxygen and tend to contribute to orange pigments.

Lutein is found in the retina of the eye, along with another xanthophyll, zeaxanthin. Because these carotenoids are found concentrated in the back of the eye, they are known as macular pigments and may be beneficial for eye health .

Lutein has antioxidant properties that may also play a role in cognitive function,  heart health, and the prevention of some cancers, though more studies are needed .

 

Eye health

The Age-Related Eye Disease Study (AREDS) is an often-cited study on lutein and eye health. Researchers looked at specific formulations of supplements and their impact on age-related macular degeneration (AMD).

A supplement containing lutein and zeaxanthin reduced the occurrence of advanced AMD by 25% over 5 years in people who already had AMD. In people without AMD, the supplement did not prevent or treat the condition.

Beta carotene, another carotenoid linked to eye health, was originally used in the supplement but was found to increase the risk of lung cancer in people who smoke.

Swapping out beta carotene for lutein and zeaxanthin was just as beneficial for eye health and did not increase lung cancer risk .

Another eye-health plus for lutein is that it’s an antioxidant. Inflammation and oxidative stress are related to eye conditions such as glaucoma, diabetic retinopathy, and macular degeneration.

Lutein has antioxidant properties, and studies have found it to be significantly effective in the prevention of these eye conditions.

Additionally, research suggests that lutein is important for babies’ eye development during pregnancy and for vision throughout their lifespan, though more research is needed to determine the optimal dose for pregnant and breastfeeding women.

Lastly, lutein may be an effective treatment for dry eyes, though more studies in this area are needed.

Heart health

High dietary intakes of lutein, as well as high levels of circulating lutein, have been associated with better heart health .

One study associated lutein and zeaxanthin with improvements in clinical markers in patients with heart disease. Researchers believe the anti-inflammatory properties were beneficial and suggest continued research in this area.

Another study found that daily supplementation of 20 mg of lutein for 3 months was associated with a decrease in  cholesterol and triglyceride levels, both of which are known risk factors for heart disease.

However, research on lutein and heart health is mixed overall, and some studies have found no correlation at all. More research, specifically in humans, is needed to determine lutein’s role in heart health.

Cancer

Lutein, along with other carotenoids, may improve cancer prognosis .

One study found that a high intake of lutein, along with other nutrients found in fruits and vegetables, was associated with a decreased risk of pancreatic cancer.

Additionally, lutein, along with other carotenoids, may be protective against breast cancer as well as head and neck cancer .

Overall, research on lutein and its benefits relating to cancer is promising but not definitive, and more human studies are needed.

Brain health

Research indicates that a high dietary intake and high circulating levels of lutein are associated with both better cognitive performance and enhanced memory .

One study found that a daily supplement including 10 mg of lutein along with zeaxanthin and meso-zeaxanthin was effective in improving memory over the course of 1 year.

Carotenoids overall may play a protective role in preventing neurodegenerative diseases, too, meaning they may help promote brain health in older age, though the research is still mixed.

Lutein is generally found in dark, leafy green vegetables  and yellow-pigmented foods. Because it’s a fat-soluble nutrient, you need to consume some fat to absorb the lutein you eat.

Some lutein-rich food sources are :

  • egg yolks (the most readily absorbed source, as a result of their fat content)
  • basil
  • parsley
  • dark leafy green vegetables such as spinach, kale, broccoli, and lettuce
  • yellow corn
  • red grapes
  • durum wheat
  • peas

Because lutein is fat-soluble, your body will absorb it best when you eat it with other foods, particularly foods containing fat. However, if you prefer, lutein is available in supplement form, often in conjunction with zeaxanthin or as a part of the AREDS-2 formulation for eye health.

A typical diet contains 1–3 mg of lutein per day, but most benefits have been shown at 6 mg per day, which can be achieved through consuming food sources of lutein.

Most  supplements contain 20 mg or more, which is much higher than the amount needed to get the benefits of lutein. However, most studies on lutein have used doses from 10–40 mg per day and have not found any adverse effects .

Lutein is categorized as Generally Regarded as Safe (GRAS), meaning that research has not found a significant link between regular lutein consumption and adverse side effects.

However, high intakes of xanthophylls, in general, have been linked to an increased risk of skin and stomach cancers.

While results from these studies were not found to be significant, more research is needed to confirm safe and optimal doses of xanthophylls such as lutein .

Before adding lutein supplements to your diet, it’s a good idea to talk with your doctor.

Lutein is a type of carotenoid with strong antioxidant properties that have been shown to be beneficial for eye health, cognitive function, and heart health and may even help decrease the risk of some cancers.

However, while some of the research is promising, most if it is not definitive and more studies are needed to confirm some of these benefits.

Foods such as dark, leafy greens and egg yolks are great sources of lutein. While you can find lutein in supplement form, it is possible to consume enough lutein through diet alone.

 

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.   

 

 

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posted by G S Iyer at 8:12 AM 0 comments

Friday, December 12, 2025

Probiotics for Alzheimer's, can they help ?

In the overall landscape of long-term health interventions, gut health is still an often ignored or dismissed subject. This is despite the fact that we have scientific evidence suggesting a direct link between the gut microbiome and digestion, cardiovascular health, immune system, and mental wellbeing. More recently, research had begun to examine the possibility of gut bacteria also having an effect on our cognitive health and the development of neurocognitive conditions like dementia and Alzheimer’s.

The more we learn about the ways our gut influences the brain via the gut-brain axis, the deeper the connection between what we eat and who we are becomes. With all the knowledge we have about the benefits of gut bacteria, one question remains unanswered - how can we effectively translate these findings into actionable health advice? 
 
Among the most promising candidates for improving gut health are probiotics. Some studies are suggesting that taking probiotics or possibly even eating probiotic-rich foods can improve cognition or even slow down the progression of Alzheimer’s disease. A recent meta-analysis reviewed 294 studies from 1984 to 2021 and found that probiotics do, in fact, have a beneficial effect on neurodegenerative diseases. Read on to find out the specifics. 

How taking probiotics can improve gut health 
 
Did you know that more than half of the human body weight consists of microbes? A big percentage of these beneficial microbes - around 5 pounds (2.7 kg) worth of them - live in the intestines, forming the gut microbiome. Every person’s microbiome is different, and researchers are now trying to work out which strains of bacteria are the most beneficial for our overall health and cognition specifically.
Probiotics For Dementia probiotic rich foods 
Probiotics are believed to be beneficial bacteria, and they exist not only in the human body but also in many fermented foods. The photo below lists the common food source of probiotics, and our article titled 7 Probiotics that Boost Your Health, Besides Yogurt, goes through most of these foods in detail. The idea is that eating probiotic-rich foods or taking food supplements that contain probiotics introduces beneficial bacteria into the intestines, strengthens the gut microbiome, and pushes out any harmful bacteria that might have taken up residence in the gut.

What about cognition and dementia specifically? 
 
The intestines are rich in nerves that regulate your digestion through signals to the spine and brain. These nerves are called the enteric nervous system, or the gut-brain. Researchers believe that an irritated and “unhappy” gut can also impact the brain, and they know that this is true because they have observed that things like a diet high in sugar can impair cognitive abilities and cause brain fog. 
 
Some scientists also suppose that a gut microbiome that’s unbalanced or insufficiently diverse, can contribute to neurodegenerative conditions like Alzheimer’s disease. It is also believed to contribute to a condition called mild cognitive impairment (MCI) - a state between dementia and normal cognition in aging adults. Both conditions are characterized by problems with memory, thinking, and language. To test the idea that diversifying the gut can improve these cognitive issues in older adults, researchers have patients take probiotics and examine their cognitive functioning. 
 
The previously-mentioned review article examined a great number of such studies and concluded that “probiotic supplementation considerably improved cognitive function in the participants with MCI, but it only caused a modest cognitive improvement in those with Alzheimer’s disease.” Therefore, taking probiotics can slow down the progression of these neurodegenerative diseases, especially if introduced when cognitive changes only begin to appear.

In addition, the researchers point out that taking probiotics improved the diversity of fecal microbiota in patients with Alzheimer’s disease. It is known that Alzheimer’s patients have a reduced diversity of microbes in fecal matter. Let us remind you that Alzheimer’s disease affects 6 million Americans and is the leading kind of dementia in the US. The causes of this disease are still unknown, so any new information that can get researchers closer to being able to treat or prevent this condition is extremely valuable. 
 
Is there a recommended dose of probiotics? 
 
Since research in probiotics is still relatively new, health organizations around the world don’t list any specific guidelines on how much or how often one should take probiotics. That said, the review study lists that the minimal dose listed in most of the studies they looked at was 1 x 10⁹ CFU (probiotics are measured in Colony-Forming Units (CFU), which refers to the number of viable cells), or about 1 billion per day. 
 
While this can be helpful if you’re taking probiotic supplements, it’s difficult to say how many probiotics you took if you get them through your diet. In this case, your best estimation is how you feel. If drinking too much yogurt or eating too many pickles makes you feel bloated or upset your digestion in any other way, lower the dose. 
 
Lastly, let us point out that you shouldn’t start taking probiotic supplements on your own. Even though probiotics are generally considered safe, older adults who want to take probiotics for cognitive health are more likely to experience gastrointestinal upsets, infections, or skin rashes than others. Therefore, you shouldn’t start taking probiotics without your physician’s supervision.
 
 

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.   

 







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posted by G S Iyer at 4:19 AM 0 comments