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Protein gives us the energy to get up and go—and keep going. Protein in food is broken down into the 20 amino acids that are the body’s basic building blocks for growth and energy, and essential for maintaining cells, tissues, and organs. A lack of protein in our diet can slow growth, reduce muscle mass, lower immunity, and weaken the heart and respiratory system. Protein is particularly important for children, whose bodies are growing and changing daily.

Here are some guidelines for including protein in your healthy diet:

Try different types of protein. Whether or not you are a vegetarian, trying different protein sources—such as beans, nuts, seeds, peas, tofu, and soy products—will open up new options for healthy mealtimes.

Beans:  Black beans, navy beans, garbanzos, and lentils are good options.

Nuts: Almonds, walnuts, pistachios, and pecans are great choices.

Soy products: Try tofu, soy milk, tempeh, and veggie burgers for a change.

Avoid salted or sugary nuts and refried beans.

Downsize your portions of protein. Many people in the West eat too much protein. Try to move away from protein being the center of your meal. Focus on equal servings of protein, whole grains, and vegetables.

Focus on quality sources of protein, like fresh fish, chicken or turkey, tofu, eggs, beans, or nuts. When you are having meat, chicken, or turkey, buy meat that is free of hormones and antibiotics.

Calcium is one of the key nutrients that your body needs in order to stay strong and healthy. It is an essential building block for lifelong bone health in both men and women, as well as many other important functions.

You and your bones will benefit from eating plenty of calcium-rich foods, limiting foods that deplete your body’s calcium stores, and getting your daily dose of magnesium and vitamins D and K—nutrients that help calcium do its job.

Recommended calcium levels are 1000 mg per day, 1200 mg if you are over 50 years old. Take a vitamin D and calcium supplement if you don’t get enough of these nutrients from your diet.

Good sources of calcium include:

Dairy: Dairy products are rich in calcium in a form that is easily digested and absorbed by the body. Sources include milk, yogurt, and cheese.

Vegetables and greens: Many vegetables, especially leafy green ones, are rich sources of calcium. Try turnip greens, mustard greens, collard greens, kale, romaine lettuce, celery, broccoli, fennel, cabbage, summer squash, green beans, Brussels sprouts, asparagus, and crimini mushrooms.

Beans: For another rich source of calcium, try black beans, pinto beans, kidney beans, white beans, black-eyed peas, or baked beans.