After following more than a thousand South Florida beachgoers for a year, experts at the University of Miami discovered an alarming trend among people who frequently swam in the ocean. Compared to non-swimmers, those who spent time in the water experienced more gastrointestinal illness, more respiratory problems, and a significantly higher rate of skin disorders, even though beach areas were clean and the water unpolluted.

The culprit? Microscopic bacteria that thrive in the sub-tropical water temperatures. Such bacteria can enter the body through ingestion or skin contact and could potentially upset the healthy balance of bacteria in the digestive tract, which is essential for optimal digestion and immune function.

Experts warn that the harmful bacteria may pose a particular threat for children as well as older adults who may be lacking in healthy gut bacteria, and recommend taking the following precautions if planning a day at the beach:

• Avoid swallowing ocean water.
• Do not swim if you are ill, have diarrhea or open wounds.
• Shower and wash your hands before and after swimming.
• Take children on frequent bathroom breaks/diaper changes.

Research also shows that taking a daily high-potency probiotic supplement can help boost the numbers of good bacteria in the gut and help ward off potential harmful invaders. As a general rule, adults should look for supplement with at least 15 billion active cultures per once-daily serving.

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A new study published this month in the Journal of Clinical Endocrinology and Metabolism suggests that insufficient levels of vitamin D may contribute to higher rates of depression among older adults. More than 900 men and women age 65 or older participated in the six-year study, and results indicated that those with vitamin D insufficiency experienced increased depressive symptoms over time.

The human body produces vitamin D as a result of exposure to sunlight, but it can also be obtained by eating certain foods—including foods and supplements fortified with the nutrient. Vitamin D helps the body absorb calcium and is necessary for healthy bones, skin and teeth, but further evidence reveals that vitamin D helps to increase levels of serotonin in the body. As a result, it may help improve mood and prevent the onset of depression.

According to experts, vitamin D insufficiency is common among seniors, so daily supplementation may help provide beneficial mood support. Because fish-derived Omega-3 fats have also been linked to improved mood, a natural daily Omega-3 supplement that includes added vitamin D may be an ideal choice. Omega-3 essential fatty acids such as EPA and DHA have also been shown to promote healthy heart, brain, digestive and immune function.

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