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It's easy to get confused about whether milk is an acid or a base, especially when you consider that some people drink milk or take calcium to treat an acidic stomach. Actually, milk has a pH of around 6.5 to 6.7, which makes it slightly acidic. Some sources cite milk as being neutral since it is so close to the neutral pH of 7.0. Milk contains lactic acid, which is a hydrogen donor or proton donor. If you test milk with litmus paper, you'll get a neutral to slightly acidic response.

Comments

February 4, 2012 at 12:18 am
(1) ankur says:

I test milk and litmus gave acidic response,is milk adultrated or not?

July 29, 2012 at 9:43 am
(2) MausuZ says:

What about milk made especially for those who are lactose intolerant, such as the Lactaid brand milk? If they put enzymes in the milk to reduce or eliminate the lactose wouldn’t that mean there’d be less lactic acid in it? Would that milk then be full-on neutral, or more of a base?

September 3, 2012 at 5:52 pm
(3) Austin says:

Pure milk is very close to the same pH scale as water,milk is 6.8,water is 7.0.Some milk products are filled with preservatives that raise the basic pH value.I am lactose intolerant myself,so I can’t have large quantities of milk higher than 6.7 on the pH scale.

February 24, 2013 at 10:35 am
(4) shadow0001 says:

Milk is more of a base

May 7, 2013 at 3:50 pm
(5) John says:

(1) No.
(3) Do you mean lower than 6.7?
(4) You’re wrong, and while that would be excusable elsewhere since it’s “common knowledge” that milk is a base, this was meant to clarify that misconception, so you’re being wrong right after being corrected, which is idiocy.

October 4, 2013 at 2:49 am
(6) warren79 says:

Although milk and water may be close on the scale, once digested, milk is broken down and 1 of the components are Amino “Acid” which builds protein. It also contains calcium which could cancel some of the acid but milk is highly acidic in the bloodstream.

These Amino acids are used to build new protein cells and those that aren’t used are left in the bloodstream causing it to become acidic. This causes your body to form mucas and leach extra calcium from bones to neutralize and trap the acids in the bloodstream else you would burn holes through your arteries. (Also depends how much and how frequently you drink milk and eat other acid forming foods)

There’s a big difference between a food being acidic and acid forming. Lemons are highly acidic but its ash is alkaline whereas milks ash is acidic.

MILK is 1 of the leading causes of osteoporosis because of its acidity.

December 4, 2013 at 12:27 pm
(7) Scott says:

Warren79 : That’s a common misconception spread by “naturalist” organizations. Lemon “ash” is not alkaline in the body. It is acidic. Your body can handle this pH, and is not a problem unless the only thing you consume is lemon juice.

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