Yin and yang content of foods

I read daily a lot about different diet principles. Recently I am researching macrobiotic diet. I will share few principles about macrobiotic diet that I find very interesting. My friend Sachi is following a macrobiotic diet and she shared with me few principles of this diet.
Macrobiotic eating follows the principle of balance (called balancing yin and yang in China).
Macrobiotics holds that some foods are overstimulating and can exhaust the body and mind.
These are classified as extreme yin (stimulating) in their effects:
Sugar
Alcohol
Honey
Coffee
Chocolate
Refined flour products
Very hot spices
Chemicals and preservatives
Commercial milk, yogurt and soft cheeses
Poor quality vegetable oils
Foods that are considered to be concentrated, heavy and dense create stagnation.

These have yang (strengthening, but stagnating effects if over-consumed).
Poultry
Meat
Eggs
Refined salt

Foods that create balance are whole grains, vegetables, beans, sea vegetables, fruit, nuts, and seeds. Foods such as these are used in a macrobiotic diet.
The above implies that macrobiotics encourages the use of foodstuffs which are themselves balanced, rather than balancing the intake so that the amount of yin and of yang foods balances out.

I think that we can learn a lot from macrobiotic diet and we can start to incorporate some elements of this diet into our western lifestyle.