In the summer, high temperatures cause sweating and fluid loss, resulting in dehydration, which makes your heart work harder. This can lead to headache, swollen feet, and ultimately to heat stroke, which is a life-threatening condition.

Taking certain heart medications can actually increase this risk because they exaggerate the body’s response to heat, making dehydration more likely. These medications include beta-blockers, ACE inhibitors, calcium channel blockers, and diuretics that deplete the body’s sodium supply.

Here are tips that will keep you well hydrated even in the August heat:

• Drink lots of water, even if you are not aware you’re thirsty.

• Be careful walking or exercising in the heat; stick to shady areas when possible.

• Choose well-ventilated shoes and socks.

• Avoid alcohol and caffeinated drinks, which are dehydrating.

• Wear light-colored, breathable clothing.

• Wear a wide-brimmed hat.

• Avoid the sun between noon and 3 p.m., when it’s most intense.