What your child eats can make a real difference when it comes to studying.

The right foods don’t just boost energy. They help your child concentrate better, remember more, and stay emotionally steady during exam season.

This doesn’t mean you’ll need to buy expensive superfoods or spend hours on elaborate prep. Below, we feature 10 brain boosters that are easy to find at local supermarkets, or online. These everyday foods are simple choices with real benefits for focus, memory, and mental stamina.

1. Mixed Nuts

Nutrient spotlight: Vitamin E, omega-3 fatty acids, and magnesium

The first thing to know is that different nuts offer different brain benefits:

• Almonds are packed with vitamin E, which helps keep brain cells healthy by protecting them from damage. Over time, this can help support memory and thinking skills.
• Walnuts are one of the few nuts that provide alpha-linolenic acid (ALA), a plant-based omega-3 fatty acid linked to better brain function and focus.
• Cashews and hazelnuts provide magnesium, a mineral that helps regulate mood and reduce mental fatigue — especially useful for exam periods!

If you're buying a mixed nut pack, check the ingredient list to ensure it contains these key varieties, and look for options that are unsalted and dry-roasted. This helps avoid unnecessary sodium and added oils. 

An example is the Camel Natural Wholesome Nut Mix – Power Bounce, available at FairPrice. It combines almonds, walnuts, cashews, pistachio kernels, and dried blueberries.

When choosing a packaged snack like this, it’s worth checking the nutrition label: For sodium, aim for 120mg or less per 100g. For sugar, a level between 5g and 15g per 100g is considered moderate. 

It’s also a good idea to glance at the ingredients list: if sugar or salt is one of the first few items, the product may be less suitable for regular snacking.

2. Oats

Nutrient spotlight: Complex carbohydrates and B vitamins

Oats are one of the simplest and most effective brain foods for students. They’re rich in complex carbohydrates, which break down slowly and provide a steady supply of glucose to the brain — important for sustained focus and mental energy. 

Unlike sugary cereals or white bread, oats won’t cause a spike-and-crash effect. They also contain B vitamins, which support nerve function and help regulate mood, especially under stress.

When buying oats, look for plain rolled oats or quick-cook oats without added flavourings or sugar. Quaker and FairPrice offer basic versions at a low cost. If you’re comparing options, check that sugar content is less than 1g per 100g; good oat products usually contain almost none.

Oats are ideal for breakfast or as a warm snack during revision breaks. You can cook them with milk or soy milk, and top with raisins or banana slices for added flavour and natural sweetness. 

3. Whole Grain Biscuits

Nutrient spotlight: Complex carbohydrates and fibre

Whole grain biscuits are a convenient study snack that travels well and doesn’t require prep. They provide complex carbs for long-lasting energy, and many contain dietary fibre, which helps regulate blood sugar levels and keep kids feeling full for longer. Some brands are also fortified with B vitamins or iron.

But not all biscuits marketed as “whole grain” are equally healthy. Some contain added sugar, flavourings, or minimal actual whole grain content. 

To choose better options, look at the ingredient list: whole wheat, oats, or whole grain flour should appear among the first few ingredients, and sugar should not be the first or second item.

On the nutrition label, aim for:

• Sugar: under 10g per 100g is ideal
• Fibre: at least 3g per 100g is a good sign
• Sodium: under 120mg per 100g is considered low

Instead of whole grain, you can also try grain-free options if you want something lower in carbs or free from common allergens — they're often made from seeds and nuts, and pair well with dips or cheese for a satisfying snack.

4. Soy Milk

Nutrient spotlight: Plant‑based protein, isoflavones, and B vitamins

Soy milk is a practical, nutrient-rich choice for students. It provides all the essential amino acids the body needs for growth and repair, making it a complete plant-based protein. It also contains B vitamins that support nerve function and mood, as well as isoflavones — natural compounds that may help protect brain cells by reducing inflammation and oxidative stress.

If you’ve ever worried about soy affecting boys’ growth or hormones, research shows there’s no evidence of that. Moderate intake — such as a cup of plain, unsweetened, or reduced-sugar soy milk a day — does not disrupt hormone levels, delay puberty, or affect growth in children of either sex. In addition, some recent studies have suggested that soy consumption may support attention and mental processing in school-age children.

Here’s how to choose soy milk wisely: opt for unsweetened or low‑sugar varieties (under about 5 g sugar per 100 ml), and check the ingredient list to ensure soybeans or soy protein appear near the top, and are not hidden beneath flavourings or fillers.

You could serve a glass of soy milk with breakfast oats, or use it as a base for a quick smoothie. 

5. Canned Tuna or Mackerel

Nutrient spotlight: Omega‑3 fatty acids

Omega‑3 fatty acids, particularly DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid), play an essential role in brain development and function. 

DHA is a major structural component of brain cells, while EPA is involved in regulating mood and managing inflammation. Together, they’re linked to better focus, memory, and emotional resilience, which are all important during exam season.

While oily fish like salmon are well known for their omega‑3 content, they can be expensive or inconvenient to prepare. Canned tuna and mackerel offer a budget‑friendly and shelf‑stable alternative, which still provides meaningful amounts of these brain‑supporting fats.

When choosing canned fish, go for products packed in water or olive oil, rather than flavoured versions that often contain added salt, sugar, or preservatives. It’s also a good idea to check the sodium content, and aim for under 300mg per 100g where possible. The sodium limit is slightly higher for canned fish, as some salt is typically needed for preservation.

For younger children, mackerel may be milder in taste and texture, while older kids may prefer tuna. Common options like Ayam Brand tuna and mackerel are widely available at most supermarkets. They're easy to keep on hand and can be used in a variety of simple meals: mix with plain mayonnaise for sandwiches, stir into rice or noodles, or pair with wholegrain crackers for a quick high‑protein snack.

6. Blueberries (fresh or frozen)

Nutrient spotlight: Antioxidants

Blueberries are rich in anthocyanins, a type of flavonoid — a natural plant compound found in colourful fruits and vegetables. Flavonoids help protect brain cells by reducing damage caused by everyday stress and inflammation in the body. Anthocyanins, in particular, may improve how brain cells communicate with one another.

In fact, several clinical studies involving school-age children have found that regular blueberry consumption may improve memory, attention span, and even reading accuracy.

For convenience, frozen blueberries are just as nutritious and often more affordable. They also last longer and are easy to portion out. Frozen blueberries work well blended into smoothies, or even eaten straight from the freezer — think of them as little brain-boosting popsicles!

What about strawberries, you may wonder? Strawberries also contain antioxidants and vitamin C, but they have lower anthocyanin content compared to blueberries. They’re still a healthy fruit option, especially when fresh and in season, but blueberries offer more targeted benefits for brain health.

7. Dark Chocolate (70% cocoa and above)

Nutrient spotlight: Flavonoids and theobromine

When chosen carefully, dark chocolate is not just a treat. It contains flavonoids, natural plant compounds that support blood flow to the brain and protect brain cells. These benefits are most noticeable with darker chocolates that have a higher cocoa content.

Dark chocolate also contains theobromine, a gentle, caffeine-like stimulant that may help with mental alertness and mood, without causing jitters.

For best results, choose chocolate with at least 70% cocoa content, as this indicates a higher level of beneficial compounds and less sugar overall. Avoid chocolates with creamy fillings or added flavourings, which tend to dilute the benefits.

Dark chocolate bars from Lindt and Ritter Sport are commonly found at our local supermarkets and pharmacies. If your child finds plain dark chocolate too intense, look for varieties that include a small amount of nuts or dried fruit, but check that sugar stays below about 25g per 100g.

A square or two in the afternoon can offer a helpful boost during study time. Avoid giving chocolate too close to bedtime, as its stimulant content may affect sleep, especially in younger children.

8. Electrolyte Drinks (only when needed)

Nutrient spotlight: Sodium, potassium, and magnesium

Even slight dehydration can affect a child’s ability to focus, remember things, or stay mentally alert. While plain water is usually enough for hydration, electrolyte drinks can help the body absorb fluids more efficiently. Electrolytes are minerals like sodium and potassium, which help regulate fluid balance and support brain and muscle function.

Although electrolyte drinks shouldn’t be consumed frequently, they can be helpful in certain situations, such as long days in air-conditioned environments, intensive revision periods, or when your child isn’t drinking much water and shows signs of fatigue or light-headedness. In such cases, electrolyte drinks can help the body absorb fluids more efficiently and support focus.

Look for options with low sugar and a balanced mix of electrolytes, such as Hydralyte. Some come in tablet or powder form, which can be dissolved in water and are easy to store at home.

That said, we should stress that for most kids, simply encouraging regular water breaks and offering hydrating foods like fruits or clear soups remains the best approach.

9. Iron-Fortified Cereals

Nutrient spotlight: Iron

Iron is essential for carrying oxygen to the brain, and a lack of it can lead to tiredness, poor focus, and even headaches. Children and teens, especially those going through growth spurts or eating less meat, may be at higher risk of mild iron deficiency.

One simple way to boost iron intake is through iron-fortified breakfast cereals. Many commercial cereals in Singapore, especially those labelled for kids or families, are fortified with iron and B vitamins, which work together to support energy levels and brain function. Look for cereals that provide at least 3mg of iron per serving, ideally with less than 10g of sugar per 100g to keep it study-friendly.

Some common options include Nestlé MILO cereal and Post Great Grains, which are widely available at local supermarkets.

To maximise absorption, pair iron-fortified cereals with vitamin C-rich fruit, such as orange slices or strawberries. Avoid taking them right after milk-heavy meals or with tea, which can interfere with iron absorption.

While cereals shouldn't be relied on to correct low iron levels, they offer a convenient way to top up iron intake, especially for students who skip heavier breakfasts.

10. Thomson Activated Ginkgo Extract

Nutrient spotlight: Ginkgo extract

Looking for a supplement that might be helpful for your child or yourself during the busy exam season?

Thomson Activated Ginkgo Extract supports memory, mental alertness, and healthy blood circulation. Each tablet contains 40mg of concentrated Ginkgo biloba extract, equivalent to 2000mg of young Japanese Ginkgo leaves. This provides a high dose of the plant’s key active compounds in a small, easy-to-take form.

In addition to supporting mental focus and blood flow, some people also find it helpful for relieving cold hands and feet, dizziness, headaches, or mental fatigue — especially during periods of intense concentration or stress.

This supplement is suitable for adults, and it may be used with caution in individuals aged 18 and below. It's available from Thomson Health — just give them a call at +65 6612 1359 if you'd like to find out more.

Want to chat about exam preparation with other parents? Join the conversation on the KiasuParents forum!