If you are looking to eat something that would help you boost your brain health then walnuts are going to be your best friends! It is an easy guess, because it even looks like brain! So, of course, what could've been better than these nutrient-packed nuts. They are known for their cognitive benefits.

You can have soaked walnuts. In fact in many households it is a common practice. Many people, including kids and adults alike eat walnut everyday to keep their brain healthy.

It has become the go to for every Indian household, especially during the winters. Its history dates back to thousands of years. The oldest tree is dated back to 7000BC, the Romans called the walnuts Juglans regia, which means 'Jupiter's royal acorn'. If history is to be looked at, the walnuts came from ancient Persia and was initially reserved for royals. They were then traded along the Silk Road between Asia and Middle East.

The first cultivation was however done in California by Franciscan Fathers in the late 1700s and the earliest of walnuts to enter California were called "mission" walnuts. Unlike the walnuts we see today, back then they were small and had hard shells. With time and technology, it succumbed to be area specific and now it can be found across the world.

While the cognitive functioning is one of the major reasons for consumption of walnuts all across, what many do not know is how much should one consume? This is an important question because they are not only highly nutritious but also have high fat content.

How Many Walnuts Are Too Many Walnuts?

They are packed with essential nutrients like omega-3 fatty acids, antioxidants, vitamins and minerals. Omega-3s are greatly packed with alpha-linolenic acid (ALA), which are important for brain health. They also help reduce inflammation and support cognitive function.

Research also suggests that only a modest amount of walnuts must be consumed. For walnuts per day, it is recommended that one should have a handful of walnuts. This could be somewhere around 28 grams. This amount also provides significant dose of omega-3 fatty acids, antioxidants, and other nutrients without overloading your calorie intake.

How Much Is A Handful Of Walnuts?

If one has to measure, a handful of walnuts would roughly be equal to 4 to 5 walnuts. These are when they are deshelled. Since walnuts could be difficult to digest, so it is important that you soak them overnight so the nutrients can be absorbed in the body easily.

What Nutrients Are In Walnuts?

Rich in Antioxidants

Walnuts have the highest antioxidant activity among common nuts. This comes from vitamin E, melatonin, and polyphenols, which are abundant in their papery skin. A 2022 study found that eating walnuts helped lower LDL (bad) cholesterol, which can lead to artery-clogging atherosclerosis.

High in Omega-3s

Walnuts contain more omega-3 fatty acids than any other nut, with 2.5 grams per ounce. These plant-based omega-3s, known as ALA, are essential fats the body needs. A single serving meets the daily recommended intake for men and women.

May Reduce Inflammation

Inflammation is linked to diseases like heart disease, diabetes, and Alzheimer’s. Walnuts contain polyphenols, especially ellagitannins, which gut bacteria convert into compounds that may help reduce inflammation.

Supports Gut Health

A healthy gut microbiota is crucial for overall well-being. A study found that eating 1.5 ounces of walnuts daily for eight weeks increased beneficial gut bacteria.

May Aid Weight Control

Walnuts may help curb appetite. A study showed that drinking walnut-based smoothies for five days reduced hunger and increased brain activity related to self-control.

Could Help Manage Diabetes

Walnuts may lower the risk of type 2 diabetes by helping with weight management and blood sugar control, as suggested by research.

Have you ever wondered about the health benefits of those tiny blue bursts of flavour that you add to your smoothie or to your breakfast cereals? Blueberries are packed with nutrients and antioxidants that offer a range of benefits, particularly to your stomach and guts. Now, a new study has found that it has significant benefits to your intelligence and cognition too.

Just Half Cup Of Blueberries Improve Cognition

A study published in Nutrients found that participants who ate just half a cup of blueberries a day for 12 weeks experienced improvements in learning, memory, and executive function decision-making, planning, focus, task management, etc.

This is particularly noteworthy because executive function governs our ability to stay organized, make informed decisions, and follow through on tasks—skills that often begin to wane with age. The fact that something as simple and accessible as blueberries could influence these areas in just a matter of weeks is pretty incredible.

Why? Blueberries are rich in antioxidants and other bioactive compounds (chemicals that promote good health). Specifically, blueberries are packed with anthocyanin, an antioxidant that improves metabolic function, increases cell-level energy production, and decreases inflammation.

These compounds are naturally occurring pigments that give blueberries their deep colour, and they do more than just look pretty—they work on a cellular level to reduce oxidative stress, which is one of the factors believed to contribute to age-related cognitive decline.

That’s especially important if you’re somewhat overweight. Generally speaking, metabolic disturbance accelerates in middle age and is a prominent risk factor for dementia. Unfortunately, those who are overweight or otherwise insulin-resistant have an elevated risk for future dementia.

So, for those trying to take proactive steps against cognitive decline, blueberries offer a simple, natural solution. Not a miracle cure—but an effective supplement to an overall healthy lifestyle. The demonstration of these benefits … suggests that ongoing blueberry supplementation may contribute to protection against cognitive decline when implemented early. Or in non-researcher-speak, half a cup of blueberries a day improved the average participant’s language skills, improved their short-term memory, and enhanced their decision-making, planning, and organizational skills.

As an added bonus, participants also experienced lower fasting insulin levels, which means their ability to process carbohydrates efficiently (an important aspect of overall metabolic health) had also improved.

Genetics Matter Too

Sound too good to be true? Granted, blueberries aren’t magic. Genetics also matter. Beyond that, considerable research shows diet, exercise, and a healthy lifestyle make the biggest impact on improving — or at the very least maintaining — the effect of aging on cognition and memory.

A healthy diet can reduce age-related cognitive decline and the risk of developing various neurodegenerative diseases.

Exercise can slow or even reverse the physical decay of your brain. Research shows exercise can increase the size of your hippocampus even in your 60’s and 70’s, helping to mitigate the impact of age-related memory loss.

As for lifestyle, insufficient sleep is associated with accelerated brain atrophy and impaired brain functional connectivity. Alcohol, tobacco, and other drugs directly impact the brain, causing it to age more rapidly, atrophy, and lose functioning ability.

So, yeah: If your diet sucks, you never exercise, and you smoke, drink, and don’t get enough sleep, blueberries are just a drop in the learning, memory, and executive function bucket.

But they can help.

Plus, adding one positive habit to your lifestyle may help you more easily add additional positive habits to your lifestyle. Psychologists call it the spillover effect: the way making one positive choice, no matter how small, inspires you to make other positive choices. The way focusing on improving one thing, no matter how small, will naturally and even effortlessly lead to making improvements in other areas.

Water is essential for life. It regulates body temperature, flushes out toxins, cushions joints, aids digestion, and helps transport nutrients throughout the body. But what happens when you stop drinking water—whether due to neglect, illness, or extreme conditions? Even mild dehydration can trigger a cascade of changes that affect nearly every system in the body. Here's what goes on inside when you stop hydrating properly.

Within First 24 Hours: Subtle Signs Begin

The average adult loses about 2 to 3 litres of water daily through sweat, urine, and breathing. If you stop drinking water, your body quickly begins to feel the effects. In the first 24 hours, you might feel thirst, dry mouth, and slight fatigue. Your urine may become darker and more concentrated — a clear sign that the kidneys are trying to conserve water.

Cognitive function can also begin to decline. Even a 1–2% drop in hydration levels can affect focus, mood, and short-term memory. Headaches, lightheadedness, and a dip in physical performance may also begin to appear.

After 48 hours: Systems Start To Slow Down

At this point, dehydration becomes moderate. The lack of fluids affects blood volume, making the heart work harder to circulate blood. You may notice a faster heartbeat, low blood pressure, and feelings of dizziness, especially when standing up quickly. As the body struggles to maintain core functions, fatigue intensifies.

The skin may lose its natural elasticity and appear dull or dry. The digestive system also suffers. Without water, the intestines struggle to move waste, leading to constipation and bloating.

By Day Three: Severe Dehydration Sets In

When water deprivation continues for more than two to three days, the consequences can be dangerous. Electrolyte imbalances worsen, leading to muscle cramps and confusion. Kidney function can begin to decline sharply, as the organs no longer have enough fluid to filter waste products efficiently. This may result in the buildup of toxins in the blood — a potentially life-threatening situation.

You may also stop sweating, which hampers the body’s ability to cool itself. This increases the risk of overheating, heat exhaustion, or even heatstroke.

Long-Term Effects And Risks

Prolonged dehydration can cause kidney stones, urinary tract infections, and in extreme cases, kidney failure. Chronic dehydration has also been linked to an increased risk of colon and bladder cancers. Over time, the lack of hydration can impact skin health, immune function, and even mental clarity.

How Much Water Is Enough?

While the “8 glasses a day” rule is a good general guideline, hydration needs vary depending on factors like age, activity level, climate, and health conditions. Experts recommend listening to your body — drink when you’re thirsty, and monitor urine color as a hydration cue. Clear or pale yellow urine usually indicates good hydration.

Water is more than just a thirst-quencher — it’s a vital part of nearly every bodily function. Going without it, even for a short time, can lead to a swift decline in health. Staying hydrated isn’t just good advice; it’s a non-negotiable necessity for survival.

To be a well-rounded healthy person, you must pay attention to all the different aspects of your life, whether it is fitness, food or sleep. All of them go hand-in-hand so you cannot neglect one or the other.

Many people often neglect their sleep in order to finish other important work. Losing sleep can be detrimental for your health, and if you are unable to sleep, you may be causing other issues for your health. When you are facing these issues, it is easy to get medication, but there are many side effects to them. There are many foods that can help you feel better and aid in your sleep. Although eating before you sleep is discouraged by healthcare professionals. These foods boost the serotonin in your body and help you fall asleep.

Role of Serotonin and Tryptophan

Serotonin is a neurotransmitter that helps control your sleep. When you don't have enough serotonin, you might find it hard to fall asleep or stay asleep. This is called insomnia. You can't get serotonin directly from food, but you can eat foods that have tryptophan. Tryptophan is a special building block that your body uses to make serotonin. It also helps make melatonin, another chemical that helps you sleep. So, eating foods with tryptophan can help your body make the sleep chemicals it needs. These chemicals help your brain and body know it's time to rest.

Foods That Boost Serotonin In Your Body

Banana & Almond Butter

This snack combines carbs, protein, and healthy fats for steady energy and sleep hormones. Almond butter stabilizes blood sugar, preventing waking up at odd hours, while bananas and almond butter relax muscles with magnesium and potassium, promoting calm and restful sleep.

Greek Yogurt with Sprouted Pumpkin Seeds

Yogurt improves sleep quality and supports gut health, which influences sleep. Tart cherries provide melatonin, and pumpkin seeds offer tryptophan and magnesium, working together to induce sleep and maintain it throughout the night.

Eggs

Eggs, especially yolks, boost tryptophan for serotonin production, aiding sleep. They are nutrient-packed with tyrosine, choline, biotin, and omega-3s, and their versatility makes them a convenient, healthy bedtime snack.

Cheese

Cheese is a tryptophan source, promoting relaxation and sleep. Mac and cheese combines cheese, eggs, and milk for a tasty sleep-friendly snack. Cheese also provides calcium, benefiting both sleep and bone health.

Edamame

Edamame offers tryptophan and isoflavones, improving sleep, especially for women. It's versatile, eaten plain or seasoned, and adding it to a snack mix enhances gut health, contributing to improved sleep quality.

Popcorn & Cashews

This high-fiber snack improves sleep; cashews provide tryptophan, and popcorn fights inflammation. The mix of carbs, fiber, healthy fats, and protein creates a well-rounded snack that supports both health and restful sleep.

Chia Pudding

Chia pudding's fiber supports gut health, aiding sleep. Chia seeds' magnesium and calcium help convert tryptophan to serotonin. Milk enhances calcium, further assisting sleep. Adding fruit and nuts boosts carbs and tryptophan for an even better sleep-promoting snack.

Salmon

Salmon provides tryptophan and omega-3s, aiding sleep and heart health. A frittata combines salmon, eggs, and milk for a nutrient-rich sleep snack. Salmon also balances cholesterol and lowers blood pressure, contributing to overall well-being and better sleep.