NutritionHealthBeginner
How Much Water to Drink on a High Protein Diet
3 min read
Eating more protein means drinking more water. Here’s why and how much.
Why Protein Needs More Water
Your kidneys need extra water to flush out urea — the waste product of protein metabolism. More protein = more urea = more water required.
If you’re drinking the same amount as before, you’re likely dehydrated.
The Formula
Daily water target: 30-40ml per kg of body weight
| Your weight | Minimum water |
|---|---|
| 50kg | 1.5-2L |
| 60kg | 1.8-2.4L |
| 70kg | 2.1-2.8L |
| 80kg | 2.4-3.2L |
| 90kg | 2.7-3.6L |
On a high protein diet (>1.6g/kg), aim for the higher end of the range.
Signs You’re Not Drinking Enough
- Dark yellow urine (should be pale straw)
- Constipation (common on high protein + low water)
- Headaches mid-afternoon
- Bad breath (ammonia smell from urea)
- Poor gym performance
Practical Tips for Indians
- Start your day with 2 glasses of water
- Drink 1 glass with every meal and protein shake
- Keep a 1L bottle on your desk and refill twice
- Eat water-rich foods — cucumber, watermelon, curd, buttermilk
- Increase in summer — India’s heat means you need more than the formula suggests
Quick Rule
Every 25g of protein above your baseline = one extra glass of water.
Use the Protein Calculator to find your daily target, then set a water reminder.