Alkaline Water: Does It Change Your Body's pH?
Alkaline water promises to neutralize acid and protect your health. Your body already keeps its pH in a tight range. Here is what that means for the water you drink.
Alkaline water has become a wellness staple, sold in bottles, made by home ionizer machines and recommended as a way to fight an acidic body. The claims range from better hydration to protection against serious disease.
It is a tidy idea: if acid is bad, drink something alkaline to balance it. But the human body does not work like a glass of water you can adjust with a few drops. Here is what pH means, how your body controls it, and what the research on alkaline water actually shows.
What alkaline water is
The pH scale runs from 0 to 14. A pH of 7 is neutral, below 7 is acidic and above 7 is alkaline. Harvard Health notes that ordinary bottled water is close to neutral, while bottled alkaline water usually has a pH of 8 to 9. The US Environmental Protection Agency recommends that public tap water has a pH between 6.5 and 8.5.
Mayo Clinic explains that some bottled alkaline waters reach their higher pH because minerals such as calcium and magnesium have been added.
Lemon, Cucumber and Mint Water
You need
- cold tap water or plain bottled water1 liter (4 cups)
- lemon, washed and thinly sliced1/2
- thin cucumber slices8 to 10
- fresh mint1 small sprig
- ice cubes, optionala few
Method
- Wash the lemon, cucumber and mint well under running water.
- Put the lemon slices, cucumber and mint in a large jug.
- Pour in the cold water and stir gently.
- Chill for at least 30 minutes so the flavors can infuse.
- Pour into glasses with ice if you like, and drink within the day.
Tips
- Remove the lemon slices after a few hours if the water starts to taste bitter from the peel.
- Top the jug up with fresh water once or twice during the day for a milder flavor.
- Berries or a few slices of orange make good swaps for the lemon.
How your body controls its own pH
Your blood is kept slightly alkaline, at a pH of about 7.35 to 7.45, and your body holds it within that narrow range. Your stomach, on the other hand, is very acidic on purpose, usually around pH 1.5 to 3.5, to help digest food.
This is where the alkaline water story runs into trouble. Harvard Health explains that stomach acid is so strong that drinking regular or alkaline water makes little difference to the pH of your stomach. Large amounts could raise it, but only for a short time. And even if alkaline water nudged your blood pH, your kidneys would quickly bring it back into balance. You cannot drink your way to a more alkaline body.
What the evidence says
Mayo Clinic says that for most people, alkaline water is not better than plain water. Claims that it prevents diseases such as cancer or stroke need more research. A few studies suggest it may slow bone loss, but it is unclear whether the added calcium is responsible. Some research suggests alkaline water combined with a plant-based, Mediterranean-style diet may ease reflux, but there is not enough evidence to be sure.
Harvard Health reaches the same conclusion: there is no evidence that alkaline water is better than safe tap water or regular bottled water. If it eases heartburn at all, the effect is short-lived, and there are more effective treatments.
So if you simply enjoy the taste, that is your choice. Just know it is not a health upgrade, and it cannot rebalance or cleanse your body.
Questions people ask
Does alkaline water hydrate you better?
There is no evidence that it hydrates better than plain water. Safe tap water or regular bottled water does the job.
Can food or drink make my body acidic?
Not in a way you can change by choosing drinks. Your body keeps blood pH in a narrow range, and your kidneys correct small shifts quickly.
Is it harmful for healthy people?
Mayo Clinic links the safety concerns especially to water above pH 9.8, which can raise blood potassium, a particular risk for people with kidney disease. Harvard Health adds a caution for people taking stomach acid reducers.
Sources
- Alkaline water: Better than plain water? — Mayo Clinic
- Is alkaline water better? — Harvard Health Publishing
- Rethink Your Drink — CDC
This article is for general information only and is not medical advice. Herbs can interact with medicines and health conditions. Talk to a doctor or pharmacist before trying a herbal remedy, especially if you are pregnant, breastfeeding, giving it to a child, or taking any medication.
