Healthy eating for older adults Archive

Some simple preventive measures can keep antibiotic-resistant bacteria at bay.

Image: hxdbzxy /Thinkstock

Although the Zika virus got more publicity throughout the summer, another—and even scarier-sounding—microbe also made headlines. Dubbed a new "superbug," strains of E. coli resistant to the antibiotic colistin were found in the United States. Colistin is a drug often used when others fail to control a bacterial infection. Fortunately, the bacteria weren't resistant to other antibiotics, which cleared the infections. "Although this particular case of antibiotic resistance may not be as dire as the media made it sound, in general these increasingly high-level resistances are an enormous problem," says Dr. Sarah Fortune, professor of immunology and infectious diseases at Harvard T.H. Chan School of Public Health.

Why superbugs are such a problem

Like other forms of life, bacteria are always evolving to become stronger and survive longer. One of the ways they increase their chances of survival is to acquire genes that help them resist threats—including natural enemies like viruses and man-made weapons like antibiotics. These genes can spring up within a bacterium through mutations and are passed down to subsequent generations of the microbe. In addition, they can be found on rings of DNA called plasmids, which can be transmitted to other types of bacteria, enabling the resistance to spread wider and faster. The E. coli strains discovered in 2016 raised concern because they carry the colistin-resistance gene on plasmids and thus have the potential to transfer the plasmids to bacteria that are already resistant to several other antibiotics.

Most drugs remain potent after their expiration dates. You may want to move it to the refrigerator, though, because drugs stored in cool temperatures usually remain potent longer.

Strong core muscles and overall fitness are linked to shorter surgical recovery times.

Cold-pressed juices and smoothies can add fruits and vegetables to your diet, but they can also pack in calories.

 Image: Mermusta /Thinkstock

According to food industry statistics, there's a healthy trend afoot. People are shifting from sugary sodas and processed bottled juice drinks to beverages like cold-pressed juices and smoothies. Sales of juice extractors and blenders lead the small-appliance market, and juice bars continue to spring up on city streets, in shopping malls, and even in supermarkets.

There are a couple of reasons people are taking to these beverages, says Kathy McManus, director of the Department of Nutrition at Harvard-affiliated Brigham and Women's Hospital. "They think they are doing something healthy, and the beverages can be time savers. It can be faster to grab a smoothie in the morning instead of sitting down to breakfast."

Transient ischemic attacks, or TIAs, can signal an impending stroke, but prompt care can minimize damage.

Image: FlairImages/Thinkstock

Have you ever experienced a brief episode when your body seemed to be a little off—your vision was blurry, your speech slightly slurred, or one side of your body felt weaker than the other? If so, you may have experienced a transient ischemic attack (TIA), says Dr. Natalia Rost, a neurologist at Harvard-affiliated Massachusetts General Hospital. She notes that many women may assume they have suffered a migraine and get back to life as usual once the episode has passed. In fact, a TIA is a serious medical issue and warrants getting immediate treatment.

Why white matter really matters

Both wearing a bite counter and eating from a small plate were linked to lower calorie consumption. 

Beverages consumed at temperatures above 150° F may contribute to esophageal cancer.