Cancer and heart disease tend to dominate the health conversation, but conditions like kidney, thyroid, hearing, respiratory and liver health affect quality of life just as much, and several carry a genuine genetic component worth understanding. Seven awareness moments mark these conditions through the year, World Kidney Day, World Oral Health Day, World Hearing Day, World Thyroid Day, World Asthma Day, World Hepatitis Day and World No Tobacco Day, and this guide draws the genetics behind all seven into a single place.
What follows covers each of these areas in turn: what a genetic predisposition can add, and just as importantly, where established screening and lifestyle factors still do the real work.
Chronic kidney disease often progresses silently until it reaches an advanced stage, which is why regular screening (blood pressure, urine and blood tests) matters, especially for anyone with diabetes, hypertension or a family history of kidney disease. Genetic predisposition testing adds one more input to that risk picture, alongside these established screening methods, not instead of them. The National Kidney Foundation Singapore runs screening and education programmes.
The thyroid regulates metabolism, energy and growth, and thyroid disorders, underactive, overactive or nodular, are common and frequently missed because symptoms like fatigue or weight change are easy to attribute to other causes. Genetic predisposition, alongside a family history of thyroid disease, is one factor doctors consider when deciding how closely to monitor thyroid function. SingHealth has more on thyroid disorders.
Hearing loss can stem from genetics, noise exposure, infection, certain medications, or ageing, often in combination. Knowing a genetic predisposition to hereditary hearing loss can be a reason to prioritise regular hearing checks and protective habits (like limiting exposure to loud environments) earlier than you might otherwise. The Singapore Association for the Deaf runs hearing care services.
Asthma has a well-established genetic component, and several genes linked to susceptibility have been identified through research. A genetic predisposition result can support earlier conversations about triggers and management with a doctor, though only a doctor can confirm asthma, not a genetic report. Singapore’s Asthma & Allergy Association is a useful local resource.
Liver health is shaped by a mix of genetics, lifestyle and, for hepatitis specifically, viral exposure. Genetic predisposition testing can flag factors relevant to how your liver processes certain substances, which is useful context for a doctor, particularly around medication and alcohol. Hepatitis screening and vaccination remain the primary tools for prevention, genetics is a supporting layer, not a substitute. NUHS has more on hepatitis B in Singapore.
Genetics influences how addictive nicotine is for a given person and how the body processes certain toxins, which partly explains why quitting is harder for some people than others. That’s a reason for compassion in how quitting support is framed, not a reason to see genetic predisposition as an excuse. Quitting remains one of the single most effective things a person can do for long-term health, regardless of genetic profile. HPB’s I Quit programme is Singapore’s main support option.
A MyDNA test reads genetic markers linked to organ and specialty health predisposition, alongside a separate set covering nutrition, fitness and other wellness traits, delivered as one confidential online report with a consultation to talk through what it means for you.
It doesn’t replace a blood test, a hearing test, a lung function test or anything else your doctor recommends. What it contributes is a genetic starting point, useful for flagging which of these areas might be worth a closer look sooner rather than later.
Kidney, thyroid and hearing health rarely get a workshop of their own, even though genetic predisposition plays a real part in all three, and smoking-related risk touches a meaningful share of any workplace.
MyDNA runs sessions for companies and community groups that bring these less-discussed conditions into the open, alongside practical genetic insight into tobacco-related risk. It’s a chance to cover ground a standard wellness calendar usually leaves out.
This guide is built on MyDNA’s direct-to-consumer testing, meant for wellness and informational purposes, not diagnosis. A predisposition result shows likelihood, not certainty, and doesn’t substitute for a blood test, a hearing test, a lung function test, or any clinical assessment. Take your results to a qualified healthcare professional, and check with one before starting a supplement, particularly if you’re pregnant, have an existing condition, or take prescribed medication.
