The Northeast Monsoon is here. MetMalaysia said the 2026/2027 season would start on 27 October and run until March 2027, with three to five episodes of continuous heavy rain expected between November and January. For most of us that means grey afternoons, wet commutes, more time indoors and more cravings for something hot and fried.
Many people also notice their tummy acting up in these weeks: bloating after ordinary meals, stools that turn soft or sticky, a heavy and sleepy feeling, and less appetite in the morning. Year-end dinners, office parties and Christmas are only weeks away, so this is a good time to give your gut some steady attention.
This guide looks at why rainy weeks can upset digestion, what Traditional Chinese Medicine means by "dampness", seven gut-friendly habits for the monsoon, and where a daily prebiotic and probiotic like TruHerbs GMaster can fit in.
Why rainy weeks can upset your digestion
Rain itself does not make you ill, but the monsoon changes how we live and eat. A few things tend to stack up:
- Less movement. Rain cancels the evening walk, jog or futsal game. Gentle movement helps keep bowels regular, so sitting more can mean slower, heavier digestion.
- Comfort food. Hot, oily and sweet foods such as goreng pisang, Maggi goreng, roti canai and teh tarik feel good on a wet day, but in large amounts they are harder on the gut.
- More cold drinks indoors. Ice in every drink in an air-conditioned room is a familiar Malaysian habit. In TCM, lots of icy food and drink is thought to weaken digestion.
- Food that spoils faster. Warm, humid weather helps bacteria multiply in food left out too long, and floods can contaminate water supplies. This is why health authorities warn about food- and water-borne illness during the monsoon.
- Broken routines. Late nights, irregular mealtimes and stress also affect the balance of bacteria in the gut.
What TCM means by "dampness" in the monsoon
In Traditional Chinese Medicine, dampness (shi) is one of the six external influences, and the long rainy season in a hot, humid country like Malaysia is a classic damp environment. The spleen and stomach, which TCM sees as the centre of digestion, are said to dislike dampness. When the spleen is "trapped by damp", people often describe:
- a heavy body and limbs, as if wearing wet clothes
- bloating and a full feeling after small meals
- soft or sticky stools that cling to the bowl
- poor appetite, a sticky mouth or a thick, greasy tongue coating
- sleepiness after meals and foggy afternoons
These are traditional descriptions, not a diagnosis, and they overlap with many other causes. Not everyone with a sluggish tummy has the same pattern, either. Some people lean towards spleen deficiency and feel tired and weak, while others lean towards damp-heat with bad breath and a bitter mouth. Our guide to spleen deficiency vs spleen heat explains the difference, and you can read more about how TCM understands dampness and natural ways to ease it.
7 gut-friendly habits for the rainy season
- Choose warm, simple meals. Porridge, clear soups, steamed fish, tofu and cooked vegetables are easier on digestion than deep-fried snacks. Ginger, a little black pepper and spring onion add warmth.
- Add traditional "damp-friendly" ingredients. Barley (yi mi), red beans, Chinese yam, lotus seeds and poria are often used in Malaysian Chinese home soups during wet weather.
- Go easy on ice. Ask for drinks with less ice or warm, especially when you are already in a cold office or air-conditioned mall.
- Feed your good bacteria. Fibre from oats, bananas, onions, garlic, beans and wholegrains helps nourish beneficial gut bacteria. Fermented foods such as tempeh and yoghurt can also be part of a balanced diet.
- Be strict with food safety. Refrigerate leftovers within two hours, reheat until piping hot, drink boiled or treated water, and wash hands before eating. After a flood, throw away food that has touched floodwater.
- Move indoors. A 15-minute walk around the mall, climbing stairs or light stretching after dinner all help when it is raining outside.
- Keep a regular rhythm. Eat at roughly the same times, do not skip breakfast, and try to sleep before midnight as often as you can, especially before a busy run of year-end parties.
Know when a tummy upset needs a doctor
Most mild bloating or a day of loose stools settles with rest, fluids and plain food. During any bout of diarrhoea, keep drinking and use oral rehydration salts if needed. See a doctor promptly if you notice:
- blood or mucus in the stool, or black stools
- high fever, severe stomach pain or repeated vomiting
- signs of dehydration such as very little urine, dizziness or a very dry mouth
- diarrhoea that lasts more than two days, or any diarrhoea in babies, elderly people or pregnant women
- fever and muscle aches after wading through floodwater. Tell your doctor about the flood exposure, as this can be a sign of leptospirosis.
Where TruHerbs GMaster fits in a daily routine
Alongside better meals and movement, some families like to add a daily prebiotic and probiotic to support a balanced gut flora. TruHerbs GMaster combines both in one yoghurt-flavoured sachet:
- Two Japan-patented bifidobacteria, Bifidobacterium longum BB536 and Bifidobacterium breve M-16V, plus 5 strains of bifidus and lactobacillus from France, with a minimum of 5 billion CFU per sachet.
- Inulin, a prebiotic fibre that helps feed bifidobacteria.
- Red berries and Chios mastic powder from the mastic tree.
- Micro-encapsulation to help protect the probiotics from stomach acid.
It is gluten-free, lactose-free and soy-free, and suitable for the whole family from age 1. Adults take 1 to 2 sachets a day, children aged 6 and above take 1 sachet, and children from 1 to under 6 take half a sachet. It is recommended on an empty stomach and can be taken straight from the sachet or mixed with juice or a yoghurt drink. Always follow the dose on the label.
GMaster is a health supplement for general wellbeing. It is not a medicine and does not replace oral rehydration, medical treatment or good food hygiene. Results vary from person to person.
If you are taking antibiotics, ask your doctor or pharmacist about timing. Many people space probiotics at least 2 hours apart from antibiotics. People with a weakened immune system, serious illness or recent surgery, pregnant or breastfeeding women, and anyone on regular medication should check with a doctor or pharmacist before starting.
Planning ahead for the year-end party season? You may also like our guide to why your gut feels broken after nasi lemak and hotpot. And if you are not sure whether GMaster suits your family, our team is happy to help you check before you buy.
FAQ
Why do I feel bloated and sluggish when it rains for days?
Usually it is a mix of less movement, heavier comfort food, cold drinks and broken routines. In TCM terms, the damp weather is said to burden the spleen and stomach, leading to a heavy, bloated feeling.
Can I take probiotics when I have diarrhoea?
Fluids and rehydration come first. Probiotics are not a treatment for diarrhoea. If you want to continue your usual probiotic, check with a pharmacist, and see a doctor if any warning signs above appear.
Is GMaster suitable for children?
Yes, from age 1. Children under 6 take half a sachet a day and children 6 and above take 1 sachet, as stated on the label. Ask your doctor first if your child has a medical condition.
When is the best time to take GMaster?
The label recommends taking it on an empty stomach, for example in the morning before breakfast. Taking it at the same time every day makes the habit easier to keep.
Do I still need to watch my diet if I take a probiotic?
Yes. A probiotic works best as part of a routine that includes fibre, warm and simple meals, food safety, movement and regular sleep.
Disclaimer: This article is for general wellness information only and is not medical advice. It does not diagnose, treat or replace care from a qualified healthcare professional. Use the product as directed on the label. Consult your doctor or pharmacist first if you are pregnant, breastfeeding, taking medication or have a chronic illness.
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