Here's a look at some of the top health news being talked about around the U.S. and the world today:

• The U.S. Food and Drug Administration should be doing more to regulate the claims of food makers, according to a new Institute of Medicine report, a Los Angeles Times article says. The committee was evaluating whether health claims made by food companies should be held to a lesser standard than health claims made by drug companies.

• As an outbreak of E. coli poisoning linked to romaine lettuce which sickened a handful of Ann Arbor area residents expands across parts of the U.S., many question how the contamination occurred in the first place. Food Safety News wrote about potential ways produce can pick up contamination in the food supply chain from farm to table.

• The Walgreens drugstore chain will not begin selling at-home genetic tests nationwide Friday as it originally planned. The U.S. Food and Drug Administration questioned the legality of selling the test before giving its approval and experts have questioned the potential harm of selling a test that claims to assess a customer's health risks without a physician's guidance, the Washington Post reported.

Tina Reed covers health and the environment for AnnArbor.com. You can reach her at tinareed@annarbor.com, call her at 734-623-2535 or find her on Twitter @TreedinAA.