Children in Singapore may be growing up in a food-rich environment, but this doesn’t mean they’re well-nourished. A local study in 2022 found that nearly 44% of its five-year-old respondents had unhealthy eating habits. Many consumed more fries and processed meats, along with treats like biscuits and ice cream, over nutritious options.

It’s not just about poor food choices. Long school hours, limited outdoor time, and screen-heavy routines can take a toll on kids’ health and make it harder for them to get key nutrients like Vitamin D, which the body makes from sunlight. Even with healthy meals, poor gut health can interfere with nutrient absorption, so shortfalls may be more common than we think.

This guide looks at some key vitamins your child may be missing, what the science says, and how to fill those gaps through food or supplements.

Vitamin D: The Indoor Generation’s Weak Spot

Why it matters: Vitamin D supports bone health, muscle function, and the immune system. Some research suggests that low vitamin D levels may affect sleep and mood, but this hasn’t been fully proven.

What the research says: Vitamin D is mainly produced in the skin through exposure to Ultraviolet B (UVB) rays from the sun. But despite Singapore’s sunny climate, many people — including children — still don’t get enough. A past national survey found that 40% of Singaporeans had insufficient Vitamin D levels, and 8% were very deficient. This could be due to limited outdoor time, with many spending most of their days indoors.

Where to find it: The best way for kids to get enough vitamin D is by spending time outdoors, as their skin makes it when exposed to sunlight. Fortified dairy products — like milk and yogurt with added vitamin D — along with oily fish such as salmon and egg yolks, can also help.

For children who spend most of their time indoors, a daily supplement may be a practical way to fill the gap. However, this should only be done in consultation with a paediatrician.

Vitamin B12: For Brain and Nerve Health

Why it matters: B12 supports red blood cell production, brain development, and a healthy nervous system.

What the research says: Some Singaporean families are adopting more plant-based diets. If you are exploring this option, keep in mind that children who consume little to no animal products may risk B12 deficiency, as B12 is found almost exclusively in animal-derived foods.

Where to find it: Meat, fish, eggs, and dairy. For kids who eat little to no meat, a supplement may be needed to meet their daily needs. Always seek medical advice before giving your child supplements.

Iron: For Energy, Focus, and Growth

Why it matters: Iron is essential for transporting oxygen in the blood and supporting brain development. Even mild iron deficiency can affect your child’s ability to concentrate, learn, and stay energised.

What the research says: In Singapore, iron deficiency anaemia is more common in females than males in the younger age group. This is often due to menstrual blood loss without adequate iron replacement — a condition that may go undetected if not addressed early. While data on young children is limited, low iron intake from picky eating or meat-light diets can also contribute to insufficient levels.

Other risk factors include inherited conditions like thalassemia, which affects about 4% of Singaporeans as gene carriers. Most carriers have no symptoms, but if both parents carry the gene, their child may be at risk for more serious forms of anaemia.

Where to find it: Iron-rich foods include red meat, chicken, tofu, and spinach. Pairing these with a source of vitamin C — such as fruit or juice — can help the body absorb iron more effectively. Do note that excess iron can be harmful to children. If you’re concerned about low iron levels, speak to your child’s doctor about testing and next steps.

Zinc: The Immunity Mineral

Why it matters: Zinc supports immune function, wound healing, and the senses of taste and smell. Most zinc comes from protein-rich foods like meat or legumes (e.g. lentils, peas, and beans), so children who eat very little of these may not get enough.

What the research says: It’s been estimated that around 15% of people in Singapore may not be getting enough zinc — a trend seen across Asia, where deficiency rates are almost twice as high as in Europe. Low zinc levels have been linked to a higher chance of falling sick, which shows just how important this mineral is for your child’s immune health.

Where to find it: Meat, seafood, eggs, legumes, whole grains, and nuts. For picky eaters or kids with frequent colds, a zinc supplement may help — but it's best to check with a doctor before starting one regularly.

Probiotics: The Gut’s Secret Weapon for Vitamin Absorption

Why it matters: The gut isn’t just for digestion — it also helps the body absorb key nutrients. When it’s out of balance from stress, illness, antibiotics, or poor diet, the body may struggle to absorb nutrients properly, even from healthy meals.

This is where probiotics, or “good” bacteria that live in the gut, come in. They help keep the digestive system balanced, so kids can better absorb nutrients, fight infections, and support healthy growth.

What the research says: Certain probiotics — like Bifidobacterium longum BB536 — can help kids absorb nutrients better, reduce gut inflammation, improve digestion, and support immunity. A study in Malaysia found that preschoolers taking BB536 had better upper respiratory health and a more balanced gut microbiota. Another strain, Bifidobacterium breve B-3, may help reduce body fat and improve metabolism in adults who are slightly overweight. However, more research is needed to know if it works the same way in children.

Where to find it: Probiotics work best when paired with prebiotics — special nutrients that feed and support the growth of good gut bacteria. Together, they form what’s called a synbiotic, a combination shown to be especially effective in improving gut health.

While fermented foods like yogurt offer general probiotic benefits, they may not contain the specific strains or amounts proven to help children. That’s where a clinically supported synbiotic like Thomson ProbioGut can help. It pairs two proven probiotic strains (BB536 and B-3) with two gentle prebiotics: inulin (a plant-based fibre) and 2’-FL (a natural ingredient found in breast milk that helps feed the good bacteria in your child’s gut).

Thomson ProbioGut is suitable for children over the age of two and can be taken on its own or mixed into food. As with any supplement, check with your child’s doctor if you have questions about suitability or dosage.

Does My Child Need a Supplement?

Supplements are not a substitute for whole foods, but in reality, few kids eat an ideal diet daily. Consider supplementation if:

• Your child is a picky eater who avoids entire food groups
• They follow a vegetarian/vegan diet
• They experience frequent infections or tummy issues
• They show signs of fatigue, poor sleep, or poor concentration
• Their growth appears to be lagging behind peers

Talk to your child’s paediatrician before starting any supplement routine, to tailor choices to their needs.

Want to chat with other parents about vitamins and other health-related concerns? Join the conversation on the KiasuParents forum!