Exactly how much water should you drink, anyway?
Compared to younger people, seniors must take extra care to get enough fluids. With age, thirst-the body’s built-in dehydration alarm system-becomes less noticeable and reliable. Older people also tend to have modest appetites, which means they receive less fluid from food. Meanwhile, due to declining kidney function, their bodies often aren’t as good at conserving the water they do get.
The amount of fluid we need to feel our best varies according to factors such as physical activity levels, physiology and climate. As a rough guideline, the Dieticians of Canada suggest 2.2 litres (nine cups) per day for women and three litres (12 cups) for men. These totals include food moisture, which accounts for about one-fifth of the average person’s liquid intake-and more for people who eat a lot of fruit and veggies. Keep in mind that you’ll need extra fluids if you’re exercising, if the weather is hot or if you’re somewhere with indoor heating, which can drain moisture from your skin.