The Food Combining Diet (Hay Diet)
The Food Combining Diet, also known as the Hay Diet, was developed by Dr. William Howard Hay in the early 20th century. It is based on the idea that certain food groups are digested more efficiently when eaten separately rather than together.

Core Principles
Protein-rich foods (e.g., meat, fish, cheese, eggs, legumes) should not be eaten together with starchy foods (e.g., bread, potatoes, rice, pasta) in the same meal.
Neutral foods such as vegetables, salads, mushrooms, nuts, and many types of fruit can be combined freely with either proteins or starches. Fruit should ideally be eaten on its own, as it digests quickly.

Intended Benefits

To ease digestion

To prevent over-acidification of the body

To support metabolism and overall well-being

Criticism & Modern View
From a scientific perspective, the human digestive system is capable of processing proteins, fats, and carbohydrates simultaneously, so strict separation is not physiologically necessary.

For many people with food intolerances, this gentle approach can be a welcome path to well-being.
I recommend if you like to lose weight in a healthy and gentle way, or maintain your weight long-term, this way of eating may be a good option for you – just as it was for me more than twenty years ago, when my stomach could no longer cope, when I could not tolerate anything I ate and suffered constant stomach pain. I searched and experimented for a long time until I discovered food combining (Hay diet) as the ideal approach for me. This has been helping me very often for sudden cravings at work: I cut carrots into sticks and take them along and enjoy them with some cherry tomatoes. Nuts are also great – they curb the appetite while providing essential fatty acids and vitamins.