Vitamin D supplements may reduce the risk of type 2 diabetes in some people, according to researchers at Tufts Medical Center.

WBZ-TV’s Dr. Mallika Marshall explains the study’s conclusion.

Dr. Barry Bloom (Research Professor, Harvard T.H. Chan School of Public Health) and Dr. Ruth Karron (Johns Hopkins Bloomberg School of Public Health) spoke with WBZ-TV’s Lisa Hughes about why the vaccine will be effective.

AstraZeneca said that late-stage trials show its COVID-19 vaccine is up to 90-percent effective. Dr. Mallika Marshall reports.

Dr. Mallika Marshall reports.

The study looked at more than 1,000 healthy adults and found the vaccine induced strong antibody and immune responses. WBZ-TV’s Dr. Mallika Marshall reports.