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CHICAGO -- Obesity appears to be associated with an increased risk of diastolic rather than systolic hypertension subtypes, researchers said here.

WASHINGTON -- The suddenly embattled diabetes drug rosiglitazone (Avandia) is an effective treatment for mild-to-moderate ulcerative colitis, researchers said here.

ANAHEIM, Calif. -- Expanding the urologic applications of botulinum toxin, two small clinical studies demonstrated significant symptom improvement in women with refractory interstitial cystitis.

CHICAGO -- Among women with newly diagnosed breast cancer, MRI of both breasts may be helpful in determining surgical treatment, researchers here suggested.

WASHINGTON -- A vegetarian diet from birth is protective against colorectal cancer, according to a study of lifelong vegetarians in India.

ANN ARBOR, Mich. -- Topical vitamin A (retinol) may improve fine wrinkles, collagen deficiency, and atrophy in the fragile skin of elderly patients.

ANAHEIM -- Intermittent androgen deprivation for advanced prostate cancer led to a similar rate of progression to androgen-independent disease compared with continuous therapy and caused fewer hot flashes, found a randomized trial.

WASHINGTON -- Recombinant clotting Factor VIIa should be used only as a last resort to treat variceal bleeding in patients with advanced cirrhosis, according to European researchers.

WASHINGTON -- Sacral nerve stimulation may be an effective alternative to surgery for patients whose idiopathic constipation doesn't respond to laxatives or biofeedback, researchers reported here.

LONDON -- Ovarian suppression can help reduce the risk of recurrence of hormone-sensitive premenopausal breast cancer, found international investigators.

LONDON -- A single oral dose of vitamin D may give the immune system enough ammunition to fight off tuberculosis for six weeks after exposure, researchers here found.

STOCKHOLM -- Blood transfusions from donors with an undetected cancer do not increase the recipients' risk of developing a malignancy, researchers here reported.

CHICAGO -- If the human target is healthy, a shock from a Taser X26 causes no lasting ill effects, a researcher said here.

MADISON, Wis. -- Americans who consider cancer to be just one of those things, a disease that is essentially random and capricious, are significantly more likely to become a statistic, found researchers here.

EDMONTON, Alberta -- Chronic pain interferes with the brain's ability to keep information in mind while working on other tasks that require attention, researchers here found.

NEW YORK -- The Wall Street Journal suggested today that the American Society of Clinical Oncology (ASCO) may be tempting its members to buy low or sell high, on the sly, by sending them advance confidential copies of its annual meeting abstract book.

CAMPERDOWN, Australia -- Aspirin therapy during pregnancy may modestly reduce pre-eclampsia risk, but unknown long-term effects require weighing the decision with each patient, researchers said.

PHILADELPHIA -- In what may be good news for the bald, researchers here have shown that mice can regenerate hair follicles in much the same way that newts and salamanders can regrow body parts.