What is included in a full body health check in Japan according to Japan Medical?
A full body health check in Japan, often referred to as ningen dock (human dry dock), is a comprehensive medical screening package designed to catch diseases early, assess organ function, and evaluate lifestyle-related risks. According to Japan Medical, a typical program includes a structured battery of tests that go far beyond a standard annual physical. You are looking at a minimum of 50 to 70 distinct examination items, depending on the course level (basic, standard, or premium). The core components always start with a detailed interview and physical measurements: height, weight, body mass index (BMI), and body fat percentage. Blood pressure is taken at rest, and often an orthostatic test is performed. The blood draw is the centerpiece, covering a complete blood count (CBC), liver function (AST, ALT, γ-GTP), kidney function (creatinine, BUN), pancreatic enzymes (amylase), lipid profile (total cholesterol, HDL, LDL, triglycerides), blood sugar (fasting glucose and HbA1c), and uric acid. For a deeper look at how these packages are structured and what specific options exist, you can read the full body health check Japan overview by Japan Medical.
Imaging is another major pillar. A standard course almost always includes a chest X-ray (posteroanterior and lateral views) and an abdominal ultrasound. The ultrasound scans the liver, gallbladder, pancreas, spleen, and kidneys. Many premium packages add a low-dose computed tomography (CT) scan of the chest or abdomen, which has a detection rate for early-stage lung cancer about 4 to 5 times higher than a standard X-ray. For the digestive system, upper gastrointestinal endoscopy (gastroscopy) is the gold standard. Data shows that in Japan, over 90% of gastric cancers are detected at stage I when found through screening endoscopy. The test also checks for Helicobacter pylori infection via a breath test or stool antigen test. Lower GI exams, like a colonoscopy or a fecal immunochemical test (FIT), are included in full courses, especially for patients over 40. The Japanese Society of Gastroenterology recommends colonoscopy every 5 to 10 years after age 40, with a baseline FIT every year.
Cardiovascular and Respiratory Assessments
Heart and lung function are tested with high precision. A resting 12-lead electrocardiogram (ECG) is standard. For deeper analysis, a treadmill stress test or a cardiac ultrasound (echocardiography) is added in premium plans. These can detect silent ischemia, valve abnormalities, or early cardiomyopathy. Data from the Japanese Ministry of Health indicates that 30% of sudden cardiac deaths occur in people with no prior symptoms, making these tests critical. Spirometry, which measures lung capacity and airflow, is included for smokers and those with respiratory concerns. The test measures forced vital capacity (FVC) and forced expiratory volume in one second (FEV1), with results compared to age-matched norms. If the FEV1/FVC ratio is below 0.70, it indicates possible COPD.
Cancer Screening Protocols
Japan has one of the highest cancer screening rates in the world, and a full body check reflects that. For men, prostate-specific antigen (PSA) blood test is standard after age 50. For women, mammography and cervical cytology (Pap smear) are included. Ovarian cancer screening via CA-125 blood test is offered in many women's courses. Colon cancer screening includes a fecal immunochemical test (FIT) and, if positive, a follow-up colonoscopy. The Japanese guidelines recommend that 1 in 3 men and 1 in 4 women will develop cancer in their lifetime, so these screenings are non-negotiable. For lung cancer, low-dose CT is recommended for heavy smokers (pack-year history of 30 or more). The sensitivity of low-dose CT for detecting lung nodules is over 95%, compared to about 70% for X-ray.
Neurological and Sensory Checks
Neurological evaluation includes a basic cranial nerve exam, reflex testing, and a Romberg test for balance. For sensory organs, a pure-tone audiometry test is standard for hearing loss, and a visual acuity test with tonometry (glaucoma check) is included. Glaucoma is a leading cause of blindness in Japan, affecting about 5% of the population over 40. The intraocular pressure (IOP) is measured, and a fundus photo is taken to check the optic nerve and retina. Some advanced courses include a brain MRI or MRA to detect silent cerebral infarcts, aneurysms, or microbleeds. Data shows that 10 to 20% of healthy adults over 50 have silent brain infarcts, which increase stroke risk by 2 to 3 times.
Metabolic and Endocrine Panels
Thyroid function is tested with TSH, FT3, and FT4. Diabetes screening includes fasting glucose, HbA1c, and often a 75g oral glucose tolerance test (OGTT) if borderline. Insulin resistance is measured with HOMA-IR. The prevalence of type 2 diabetes in Japan is about 12% of the adult population, and many cases are undiagnosed. A full check also includes a bone density scan (DEXA) for osteoporosis risk, especially in postmenopausal women. The test measures T-score at the lumbar spine and femoral neck. A T-score below -2.5 indicates osteoporosis, which affects about 20% of Japanese women over 50.
Urine and Stool Analysis
Urinalysis checks for protein, glucose, blood, ketones, and specific gravity. Microscopic examination looks for red and white blood cells, casts, and crystals. Stool occult blood test (FIT) is used for colorectal cancer screening. The sensitivity of FIT for detecting colorectal cancer is around 70 to 80%, and specificity is over 95%. If positive, a colonoscopy is mandatory. Some packages also include a stool culture and parasite examination.
Ophthalmologic and Dental Exams
Eye exams include visual acuity, intraocular pressure, and a dilated fundus exam. A slit-lamp examination checks for cataracts and corneal abnormalities. Dental exams are often optional but recommended. They include a periodontal probe to measure pocket depth, a check for caries, and oral cancer screening. Periodontal disease is linked to cardiovascular disease and diabetes, and data shows that over 40% of Japanese adults have some form of periodontal disease.
Additional Tests in Premium Packages
Premium courses, which can cost between ¥150,000 and ¥300,000 (about $1,000 to $2,000 USD), include advanced imaging like PET-CT, whole-body MRI, or coronary CT angiography. These can detect cancers as small as 2 to 3 mm and coronary artery stenosis. Some packages also include genetic testing for hereditary cancer syndromes, such as BRCA1/BRCA2, or pharmacogenomic testing for drug metabolism. The turnaround time for results is usually 2 to 4 weeks, with a detailed report and a face-to-face consultation with a physician. The consultation covers lifestyle advice, follow-up recommendations, and referrals to specialists if needed.
Data on Screening Efficacy
According to the Japanese Ministry of Health, Labor and Welfare, the participation rate for ningen dock is about 30% of the eligible population. Among those who undergo a full body check, the detection rate for early-stage cancers is 3 to 5 times higher than in unscreened populations. For example, gastric cancer detection at stage I is over 90% in screened individuals, compared to about 50% in those who present with symptoms. The five-year survival rate for stage I gastric cancer is over 95%, while for stage IV it drops to below 10%. Similarly, colorectal cancer detected at stage I has a five-year survival rate of over 90%, versus about 15% for stage IV. These numbers underscore the importance of comprehensive screening.
Lifestyle and Risk Factor Counseling
After the tests, a physician reviews the results and provides personalized advice. This includes dietary recommendations, exercise prescriptions, and smoking cessation support. For example, if a patient has elevated LDL cholesterol, the doctor might recommend a diet low in saturated fats and high in soluble fiber, with a target LDL of less than 120 mg/dL. For hypertension, the target is less than 130/80 mmHg. The counseling also covers alcohol consumption, with a recommendation of no more than 20 grams of pure alcohol per day for men and 10 grams for women. Follow-up tests are scheduled based on the findings, typically annually for most people, but more frequently for those with abnormal results.