The service - called - includes a range of widgets and other tools, covering a sensitive area due to issues of privacy and security.
Despite fears that consumers will be reluctant to store their health information online, both Microsoft and Google are confident people will warm to the idea. Google has a beta product called .
My Health Info offers features designed for busy parents, adults who are managing the health concerns of aging parents, and people managing chronic conditions.
It enables users to customise their page with tools such as allergy, medicine and blood pressure trackers, a lab results bank, body mass index calculators, and vaccination information.
They can also use information from personal health devices such as heart-rate monitors and pedometers, and access profiles of multiple family members, allowing people caring for family members to access their health information as well as their own.
Scott Moore, US executive producer at MSN, said: "People care deeply about credible, timely and comprehensive information about health topics. MSN My Health Info will provide an exceptional selection of resources, tools and information available from a variety of sources in one convenient location.
"We are committed to delighting our customers with information, services and tools that keep them informed and simplify their lives."
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