Column: Dr Guseh On Heart Health, Heat & More

[Column written by Dr Sawalla Guseh]

As Bermuda experiences one of its hottest and driest summers in recent memory [recent week aside!], many of us are feeling the strain – and so are our hearts. With soaring temperatures, unusually low rainfall and residents scrambling to refill water tanks, it is more important than ever to understand how heat affects heart health.

While we often think of summer as a time for activity and outdoor enjoyment, excessive heat can put real pressure on the cardiovascular system, especially for older adults and those with existing health conditions. As a cardiologist, here are a few essential tips to keep you and your loved ones safe this season.

Hydrate early and often

Do not wait until you feel thirsty – by then, your body may already be running low. Drinking water regularly throughout the day is key. It is far more effective than relying on caffeinated drinks, including coffee and certain energy drinks, which can actually contribute to dehydration.

Avoid the peak heat

If you’re planning to exercise, do yard work or run errands outdoors, try to do so before 10am or after 6pm when temperatures are lower. The midday sun not only raises your risk of sunburn but also increases your risk of heat-related illness.

Know the signs

Dizziness, confusion, nausea or a racing heart could signal heat exhaustion or even heat stroke. These symptoms should never be ignored: get to a cooler space, rehydrate and seek medical help if they don’t abate.

Be mindful of medications

Some common medications, particularly those used to treat high blood pressure like diuretics, can increase your body’s sensitivity to heat. If you take regular prescriptions, ask your doctor whether any adjustments might be necessary this summer. It is also a good idea to monitor your blood pressure more frequently when it is especially hot.

Check in on the vulnerable

Older adults, young children and people with heart conditions are more at risk of heat-related illness. If you know someone who lives alone, check in on them, especially during long hot spells.

Dress the part

Lightweight, breathable clothing and a wide-brimmed hat can make a real difference when outdoors. Keeping your body cool helps reduce the strain on your heart. If out on the water, it can be worth investing in a rash shirt or other sun protection.

Ease into new routines

Starting a new fitness plan? That’s great – but do it gradually. Jumping straight into intense workouts in extreme heat can place undue stress on your heart. Why not focus on water-based activities which may at least keep you a little cooler – though you should be vigilant about reapplying sun protection as needed.

With a little planning and awareness, it is possible to stay safe, active and healthy, even during Bermuda’s hottest months.

- Dr Sawalla Guseh, Director of Cardiovascular Performance Program, Mass General Brigham Heart and Vascular Institute

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