Everyone looks forward to lake time with family and friends. Being on the boat, fishing on the dock, and swimming in the water are great ways to spend your weekend. Before you jump in this summer let’s talk about some health benefits and risks that lake water can present.
Health Benefits of Swimming in Lake Water
Did you know swimming in lakes and freshwater sources is one of the best ways to exercise?
- Over 85% of your muscles are used while swimming to natural resistance from the water, making it an effective full-body workout.
- Cold freshwater forces the body to work harder to maintain body temperature, boosting your metabolism and burning more calories.
- Sudden cold water triggers vasoconstriction and then dilation, which flushes out toxins, supports cardiovascular health, and stimulates white blood cell production.
- Nature and exercise increase endorphins and reduce stress, anxiety and depression.
- Daylight exposure combined with the cold-water circulation helps regulate circadian rhythms for better sleep.
Common Risks of Swimming in Lake Water
Swimming in lakes can be refreshing and fun, but it's important to be aware of potential health risks. Natural bodies of water can harbor harmful microorganisms like E. coli, giardia, cryptosporidium, norovirus, and legionella, which may cause gastrointestinal distress, skin rashes, ear infections, or even respiratory issues. Swimmer’s itch, caused by parasites found in shallow water, can also lead to itchy skin eruptions after wading or swimming. Understanding these risks helps you make safer choices before diving in.
Germ levels in lake water often rise after heavy rainfall or in cloudy conditions, increasing the risk of exposure. Drinking untreated lake water can also lead to illness, so it’s best to avoid swallowing it altogether.
How to Prevent and Treat Lake-Related Illnesses
Staying informed and taking a few simple precautions can help you enjoy lake days safely and comfortably. To reduce your risk, avoid swimming in marshy areas where snails, common hosts for swimmer’s itch parasites, are likely to be found. Keep birds away from swimming and lounging areas, as their droppings can contribute to water contamination.
“After swimming, towel off or shower as soon as possible to help prevent skin irritation and infections,” says Dr. Eric Johnson, assistant medical director at Altru’s Diabetes Center. “If a rash does occur, treatment options include applying corticosteroid cream, using cool compresses, soaking in Epsom salt or colloidal oatmeal baths, applying a baking soda paste, and using anti-itch lotion. Avoid scratching the affected area to prevent further irritation.”
Dive In, Safely
While it’s important to take precautions and watch out for symptoms, don’t let worry ruin your time outdoors.
If you or your child develops a lake-related illness, Altru is here to help. Visit one of our Express Care locations or schedule an appointment by calling 701.780.5000 for expert care close to home.