Nutrition Myths
Advertisement

Acid ash hypothesis

The ash-diet hypothesis forms the basis of alkaline diet. It says that some foods containing acid-forming substances (such as animal protein from milk or meat and some plant foods) cause the blood pH to drop or become less alkaline. This effect is then buffered by minerals released from bones. That loss of minerals from the bones is supposedly responsible for mineral bone loss and the resulting osteoporosis.

Supporters of this hypothesis believe that a typical Western diet predominantly consists of these acid-forming foods and that following this diet puts us in a permanent state of mild acidosis which in the long term leads to gradual mineral bone loss. (1, 2)

One of the myths derived from this hypothesis (related to alkaline diet), is that milk/dairy products weaken the bones and may lead to osteoporosis. 

Related Posts

Do acid-forming foods make urine more acidic? Acid-ash foods contain minerals which lower the fluids' pH. To maintain the blood at its optimum acid-base level the body removes the acidic substances trough urine, making it more acidic.
Does milk cause osteoporosis? Milk, dairy products and milk derived supplements are good for bone health. The acid-ash hypothesis, which this myth originated, has been disproven by many studies.
Alkaline diet – myths and facts based on science The alkaline diet is actually healthy, but its benefits have nothing to do with what it is claimed. The inclusion of healthy, fresh and whole foods and the restriction of processed and unhealthy foods is what makes it he...
List of alkaline and acidic Foods List of alkaline and acidic foods and their pH levels. Find out which foods are acidic for culinary usage and for prevention of digestive issues.
Difference between acidic food and acid-forming food Acid-forming foods and acidic foods are unrelated and produce different effects on the body. Acid-forming foods may reduce the urine pH level, with no impacts on health. Acidic foods don't have an impact on the body's pH...
Advertisement
Advertisement

Get updates

Receive regular updates on nutrition myths, facts and curiosities. All based on the latest scientific evidence.