The food separation diet was developed by Dr. H. Hay in response to personal
experience. This diet was initially developed to prevent and cure illness but
has since been pared down to the extent that it can today be seen as a weight
Protein containing foods and carbohydrate containing foods should be kept
strictly separate from one another (hence the term food separation).
Separating these foods leads to improved digestion: proteins can be broken down
more easily without carbohydrates, and vice versa.
According to Dr. Hay, acid forming foods (e.g. meat, fish, cheese) and alkaline
forming foods (e.g. fruit, vegetables) should not be eaten at the same time.
However there are also neutral foods (e.g. yoghurt, milk) which according to Hay
mix well with proteins and carbohydrates whereas proteins and carbohydrates
eaten together can lead to fermentation in the small intestine.
For the laymen amongst us that might seem reasonable, yet the Hay theory is
The Hay Plan diet includes the following:
A recommended break of 4 hours between meals.
Acid forming and alkaline forming foods should NEVER be mixed: 80% of daily food
intake should be from alkaline forming foods and 20% from acid forming foods.
Food separation is almost impossible as many foods consist of both acid forming
and alkaline forming elements.
Unfortunately there has never been any real scientific evidence that this in
fact an all-round healthy and logical diet.
Unfortunately there is also a misconception here: The dietís success is
attributable not to food separation but simply to calorie reduced meals.
Unfortunately it doesnít achieve a fast weight loss either.
The theory that acid and alkaline forming foods cannot be digested easily when
combined together is also outdated: Such foods can be digested equally well
whether eaten together or separately.
Forget expensive food separation and having your favourite meat without potatoes;
instead go for something with fewer calories which will work just as well as any
food separation diet.