The calculator opens in a new tab. It will prompt you to select your country.
How to read your result
Country thresholds vary: BHOF/ACOG (US): 20% major / 3% hip · NOGG (UK): age-specific curves · Osteoporosis Canada: 20%
Whatever your number — bring it to your doctor with one question: "Should I get a DEXA now, rather than waiting until 65?"
Your Heart Risk — Both 10-Year and Lifetime
Cardiovascular risk · Filtered by country
Different countries use different calculators, each validated for the local population. All of them calculate your 10-year risk of a heart attack or stroke. Some also calculate your lifetime risk — often radically higher and more informative for women in perimenopause.
🇺🇸 US and 🇨🇦 Canada
ASCVD Risk Estimator Plus
Calculates 10-year risk (women 40–79) and lifetime risk (women 20–59). The only major calculator that shows lifetime risk for middle-aged women.
New Zealand uses an adapted version of PREDICT. The calculator is integrated into clinical software — available through your GP, not as a public tool.
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For women 45–50: pay attention to lifetime risk.
Your 10-year risk almost always looks reassuringly low (2–4%) — cardiovascular events in middle-aged women are statistically rare. But your lifetime risk is often radically different — typically 25–35%. Same woman, same risk factors — just calculating through age 95 instead of 55.
That second number is the one to bring to your doctor. The decade of perimenopause is the window where you can influence decades to come.
What to bring to your doctor
Once you have both numbers, here are three specific questions to ask:
"Given my numbers — how does this affect the MHT decision? Does it change the form (transdermal or oral), route, timing, or risk-benefit profile?"
"Do I need additional tests? For example, ApoB or Lp(a) to refine my lipid profile, or a coronary calcium score (CAC) for direct atherosclerosis assessment?"
"At my risk profile — when should the test be repeated, and what would need to change to revisit the strategy?"