Meantime, leaders of the Framingham study say they are intrigued by digital's potential role in heart research.
WSJ: Heart Disease Study Aims to Chart Risk of Heart Attacks, Strokes in Real Time
The Framingham study hadn't uncovered a link between strokes and cholesterol levels.
"No doubt there's enormous promise here for new technology to change our understanding of health and disease, " said Daniel Levy, who leads the Framingham study.
WSJ: Heart Disease Study Aims to Chart Risk of Heart Attacks, Strokes in Real Time
Elderly women who lose that much height that fast have a 21% higher risk of hip fracture, said the study, which examined data from over 3, 000 adults from the Framingham Heart Study.
Participants came from the Framingham Heart Study, a large study that has been going on since 1948 to look at heart disease risk factors in Framingham, Massachusetts.
The Framingham Foot Study looked at 1, 370 adults and found strong family histories of the condition.
It is modeled on the famous Framingham Heart Study, which helped spot cholesterol and other risk factors for heart disease.
Studies in this area have made use of large, defined cohorts, such as the Framingham Heart Study, to document risk factors in healthy populations, which are then followed for decades to see who develops heart disease.
Because the Framingham Heart Study is not a randomized controlled trial, it's still not clear if vitamin D is the real reason for the link (the vitamin's levels could drop in unhealthy people for other reasons), or if taking a supplement would lower the risk.
Cholesterol's importance emerged from a government study of 5, 000 people from Framingham, Mass.
But Dr. Levy, who isn't familiar with the UCSF plans, said Framingham researchers want more information about how such techniques would affect privacy and other issues before including them as study tools.
WSJ: Heart Disease Study Aims to Chart Risk of Heart Attacks, Strokes in Real Time
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