US EditionHow Much Water Do You Actually Need to Drink Each Day? We Asked an Expert
JUL 6 – Dana Cohen, M.D., recommends personalized water intake based on body weight and lifestyle instead of a fixed 8-glass daily guideline, noting hydration needs vary widely.
- Dr. Dana Cohen, an integrative medicine physician, questioned the commonly accepted recommendation of consuming a fixed amount of water daily, arguing that this guideline is too simplistic and doesn’t suit everyone’s unique needs.
- She explained that individual water needs vary widely based on factors such as body size, activity level, diet, environment, and health status.
- Cohen recommended assessing hydration through markers like pale yellow urine, urination frequency every two to three hours, and listening to bodily signals rather than fixed quotas.
- She explained that understanding what works best for you requires paying close attention to how your body responds personally, rather than relying on universal guidelines.
- This approach implies hydration strategies should be personalized to support health and performance instead of strictly following generic daily water amounts.
14 Articles
14 Articles
A 2022 study has disassembled the universal rule of water per day, demonstrating that water needs vary according to age, lifestyle and climate. With the summer 2025 marked by a hot record, experts recommend adapting hydration to personal needs, offering advice on how much and which water to drink to prevent dehydration
Q: How much water does an average person need to drink? Is there excess? If you don't drink from a 1.7-liter glass Stanley all day long, are you still alive? Hydration is back in fashion: TikTok videos with the hashtag #watertok already have more than a billion views. Whether you drink from a modern glass or from a common glass, there is no universal solution for the amount of water you should drink a day.
Many people know the rule of thumb: one should drink 1.5 to 2 liters of water on average a day. But if it is really hot in summer, one should definitely drink more water! Especially if one moves outside and is much sweating. In summer, one should drink at least 2.5 rather 3 liters of water per day, because one loses much more fluid by sweating. Your Mariella MisquialMore Aha moments
Find out if it really matters to hydrate before bed.
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