Common Health Questions, Answered by Doctors
This section brings together the most frequently asked health questions and provides clear, direct answers written by practising doctors. Questions are grouped by topic so you can find what you need quickly.
Heart & Blood Health
Q: What cholesterol level is considered dangerous?
A: LDL above 160 mg/dL is considered high for most adults. However, the safe threshold depends on your overall cardiovascular risk profile. Someone with diabetes or a family history of heart disease may need lower LDL targets. Discuss your specific numbers with your doctor.
Q: Can high blood pressure cause symptoms?
A: In most cases, no. This is why it is called a silent condition. Persistent headaches, dizziness, or visual changes can sometimes be associated with very high readings, but these are not reliable warning signs. Regular monitoring is the only dependable way to know your blood pressure status.
Nutrition & Metabolism
Q: Should I take a multivitamin every day?
A: If you eat a reasonably varied diet, a multivitamin is unlikely to offer meaningful additional benefit for most nutrients. Targeted supplementation — vitamin D, B12, or iron — based on tested deficiencies is more useful than a general multivitamin. Get your levels checked before supplementing.
Q: How do I know if I am eating enough protein?
A: A practical estimate is 0.8 to 1.2 grams of protein per kilogram of body weight per day for most adults. Athletes and older adults may need more. Signs of inadequate intake include persistent fatigue, slow wound healing, and difficulty building or maintaining muscle mass.
Mental Health & Sleep
Q: How many hours of sleep do adults actually need?
A: Most adults function best with seven to nine hours. Sleep need is partly genetic and does not decrease simply because you have been sleeping less. Chronic restriction below six hours is associated with increased cardiovascular risk, impaired immunity, and mood disturbance.
Q: Is it normal to feel anxious most days?
A: Occasional anxiety in response to real stressors is normal. Daily, persistent anxiety that interferes with work, relationships, or sleep is not something to accept as a baseline. This level of anxiety responds well to treatment — speaking with a doctor or counsellor is a good first step.
Preventive Care
Q: What health checks should I have at age 40?
A: At 40, most doctors recommend a full blood panel including lipids, blood glucose, thyroid function, and a complete blood count. Blood pressure, BMI, and a review of family history are also standard. Women should discuss mammography and cervical screening schedules with their gynaecologist.
Q: When should I see a specialist rather than a GP?
A: Your GP is usually the right starting point. They will refer you to a specialist when a condition is outside their scope, when investigations suggest a specific diagnosis, or when first-line treatment has not worked. You can also request a referral if you feel one is needed.