Heart
and Fitness Checks Before Scuba Diving in Bali: A Safety Guide
(2027)
Short answer: A diving medical in Bali is a focused
fitness-to-dive assessment that screens your heart, lungs, ears and
general fitness for the physiological stress of scuba diving. It matters
most if you are over 45, have a family or personal history of heart
disease, high blood pressure, diabetes, asthma or lung conditions, or if
you answered “yes” to any item on the standard diver medical
questionnaire. For expats who dive regularly around Bali’s world-class
sites, a preventive heart-and-fitness check is not bureaucratic
box-ticking — it is the single most useful thing you can do to lower
your risk of a cardiac event underwater, which is a leading cause of
diving fatalities in older divers.
Bali sits on the doorstep of some of the best diving in the world —
Tulamben, Menjangan, Nusa Penida and the crossing to the Komodo region —
and many long-stay foreigners here dive far more often than they ever
did at home. That regular exposure changes the risk maths. Diving places
real demand on the cardiovascular system: immersion shifts blood
centrally, cold and exertion raise cardiac workload, and a heart problem
that stays silent on land can become dangerous at depth. As a
preventive-medicine doctor, I treat a fitness-to-dive check as part of
sensible screening for any active expat, not a separate hoop.
Why the heart is the
priority
Recreational diving is generally safe for fit, healthy people, but
international dive-safety data consistently show that cardiac
events are a leading cause of death in divers over 45, often in
people who felt perfectly well. The reason is simple: exertion,
immersion and cold can unmask coronary artery disease or a rhythm
disturbance that produced no symptoms in ordinary life. This is exactly
why a preventive cardiac check earns its place before a season of
regular diving. Our heart and
metabolic screening guide explains the full cardiac work-up — ECG,
cardiovascular risk scoring and, where indicated, stress testing — that
a diving assessment draws on.
What a fitness-to-dive
assessment covers
A proper diving medical goes beyond a signature on a form.
- History and questionnaire review. The
internationally used diver medical questionnaire flags conditions —
cardiac, respiratory, neurological, ENT — that need a doctor’s clearance
before diving. - Cardiovascular assessment. Blood pressure, resting
ECG, and cardiovascular risk scoring; further cardiac testing if your
age or risk warrants it. - Respiratory check. Lungs are examined for asthma,
prior pneumothorax or other conditions that affect gas exchange and
buoyancy safety. - ENT (ears, nose, throat). Your ability to equalise
pressure is checked — a common, under-appreciated cause of diving
injury. - General fitness and metabolic review. Diabetes,
obesity and fitness level all influence dive safety; a lipid and glucose
panel often forms part of the assessment. See our blood tests and biomarker panels guide for
what those panels include.
Who should get checked
before diving
You should have a fitness-to-dive assessment if you are over
45, are returning to diving after a long break, have a
personal or family history of heart disease, have
high blood pressure, high cholesterol, diabetes or
pre-diabetes, have asthma or any lung
condition, are significantly overweight, or answered “yes” to
any medical-history item on the diver questionnaire. Many dive operators
and certification bodies require physician clearance in these
situations. Even if no one asks for it, if you are an active over-40
expat diving Bali’s sites regularly, this check is worth doing on its
own merits — and it dovetails neatly with your annual screen.
How this fits your annual
check-up
The most efficient approach for a diving expat is to fold the
fitness-to-dive assessment into a broader preventive screen rather than
treating it as a one-off. The cardiac, respiratory and metabolic
elements overlap heavily with what a good annual check-up covers anyway,
so you get diving clearance and a full-body preventive picture from a
single coordinated visit. Our core preventive health screening in
Bali page explains how these components fit together by age and
risk.
Practical notes for divers
in Bali
Do not dive with a fresh chest or ear infection, poorly controlled
blood pressure, or after any new cardiac symptom — get cleared first.
Stay well hydrated, as Bali’s heat plus diving is dehydrating and
dehydration raises decompression risk. And keep your assessment current:
fitness changes, and a clearance from five years ago tells you little
about your heart today. Age is not a barrier to diving in itself —
plenty of expats dive safely well into their sixties — but it does mean
the check-up carries more weight, because the conditions a
fitness-to-dive assessment looks for become more common with each
decade.
It also helps to be honest with yourself and your doctor about your
real fitness level rather than the diving you did in your thirties. If
you have become more sedentary since moving to Bali — a common pattern
for remote workers — a plan to rebuild baseline cardiovascular fitness
before an intensive diving trip is often the most useful outcome of the
assessment. Our health
checks for men over 40 in Bali guide covers how cardiac and
metabolic risk shifts with age, which maps directly onto why active
over-40 divers benefit from a proper check.
Medical disclaimer
This article provides general health information for educational
purposes and reflects fitness-to-dive assessment practice at the time of
writing. It is not medical advice, does not constitute
a fitness-to-dive certification, and does not replace consultation with
a qualified physician or a certified diving-medicine practitioner.
Whether you are fit to dive must be determined individually by a
licensed doctor who has assessed you and your history. If you have any
cardiac, respiratory or neurological condition, seek clearance before
diving. Source: Divers Alert Network (DAN), diving fitness and
cardiovascular health guidance — dan.org; U.S. Preventive Services Task
Force cardiovascular risk guidance —
uspreventiveservicestaskforce.org.
Get cleared to dive Bali
safely
If you dive regularly around Bali and want a proper fitness-to-dive
and cardiac check — ideally combined with your annual screen — we can
arrange it end to end. Talk to our JHG Medical
Concierge team, or message us on WhatsApp at wa.me/6281139414563. Start at the
Bali Health Checkup homepage to see how a diving
assessment fits into full preventive care.
Related reading: Cholesterol and
heart-risk checks in Bali · Health checks for men over
40 in Bali
Medically reviewed by Dr. Saraswati Wijaya, MD,
Preventive & Lifestyle Medicine Physician and Medical Advisor to
Bali Health Checkup (operated by JHG Medical Concierge). Last reviewed
February 2027.
Sources: Divers Alert Network, Cardiovascular
fitness and diving; Mayo Clinic, Heart
disease and physical activity.