Sheah Rarback, a registered dietitian, is on the faculty of the Miller School of Medicine at the University of Miami. She answers your questions about nutrition.

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Gut-brain connection a 2-way street, researchers find

I’ve got a tip on a mind-altering substance that is inexpensive, legal and readily available. UCLA researchers demonstrated that the beneficial bacteria in yogurt altered brain function during tasks and rest. 1371653971

HEALTH/MEDICINE

University of Miami Hospital sends team to Panama to save NCIS agent’s life

University of Miami Hospital sent a team to Panama with the special Impella heart pump to help save an NCIS agent’s life.
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British fast-diet fad hitting our shores

The most recent trendy U.K. import is not music or fashion but a weight-loss plan. The British bestseller The Fast Diet by Dr. Michael Mosley isn’t as popular here yet, but it is in Amazon’s health books Top 10.
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High-protein breakfast can cut cravings all day

Would you be interested in a pill that decreases the hunger-stimulating hormone ghrelin and increases the satiety hormone peptide YY? This potent combination exists, but it is nutrient, not a pill. Today’s topic is protein.
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Frozen produce a nutritional asset

As I was describing the virtues of frozen produce to a class recently, one of my students shot me a “Where did you get your degree?” look.
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Try these foods for better sleeping

Do you jump out of bed ready to start the day or are you making deals with the alarm clock for five more minutes? Negotiating for more morning slumber could mean a lack of nighttime restorative sleep.
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Eating more fruits and vegetables associated with lower risk of ALS

Produce power strikes again. The role of vegetables and fruits in reducing the risk of heart disease, certain types of cancer, cataracts and macular degeneration has been demonstrated time and again. Now ALS, often referred to as Lou Gehrig’s disease, is being added to the list.
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Weight-loss tech, the bad and the good

When does a weight-loss intervention cross the line?
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New tools for a new you

Have you made your New Year’s resolutions? After eating through the holiday parties, healthier living goals often top the list. Food and activity changes can be challenging, but when goals are well crafted, the path to success is easier.
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Soda-size fight has broader appeal

No matter which side you take in the Mayor Bloomberg soda-pop debate, you have to give the man credit for igniting a conversation. Americans are getting heavier and 42 percent of the population will be obese (not overweight) by 2030. And when that happens, our nation will be dealing with $550 billion in obesity-related health care costs. Dramatic action is needed.