The synergy of food, said David R Jacobs, PhD, professor of epidemiology University of Minnesota, U.S., occurs when two or more nutrients work together to reach better health.

Synergy or duet was actually more beneficial than if the food go solo. For example, broccoli and tomato soup is better in prostate cancer than just banish the tomato.

Here are examples of healthy food duet:

1. Calcium and Vitamin D
In preventing osteoporosis, vitamin D is a good collaborator for calcium. "Vitamin D is the main regulator of calcium absorption for bones," says Steven Pratt, MD, author of Super Foods Health Style: Proven Strategies for Lifelong Health. Without enough vitamin D, your body absorb calcium, 65 percent less. This combination of two nutrients, the researchers say the Harvard Medical School, lowers the risk of breast cancer up to 30 percent in women pramenopause.
Example duet healthy: yogurt and salmon.

2. Carbohydrate and Protein
These two nutrients are important diasup after exercise. "Research shows, intake of carbohydrates and protein to speed muscle recovery after exercise and prevent the decline in immunity," said Monique Ryan, sports nutritionist and author of Nutrition for Endurance Athlete.
Examples of healthy duet: tempeh and potatoes.

3. Iron and vitamin C
If you are vegetarian, you can rely on knowing, beans, and spinach for iron. This can save you from saturated fat content in meat. "Actually, the body absorbs 20 percent less iron from plants. Unless there are other nutrients that help the absorption of iron, ie vitamin C, "says Georgianna Donadio, PhD, Program Director of the National Health Institute of Whole Health in Massachusetts. Iron is good for improving memory. The function was so improved by the addition of vitamin C.
Examples of healthy duet: orange juice and spinach.

4. Fat and carotenoids
"Unsaturated fats to facilitate the formation of cell membranes healthy," says Donadio. Adding in unsaturated fats like olive oil into a salad can increase the efficacy of anticancer, antioxidant carotenoids such as high grade in your body.
Examples of healthy duet: a salad vegetables and olive oil.

5. Folate and vitamin B6
Together with vitamin B12, both of these vitamins work to prevent increased homocysteine. Known homocysteine causes heart disease, Alzheimer's, and osteoporosis. Examples of healthy duet: spinach and avocado.