1. Do something!

Scientists are starting to think that regular aerobic exercise may be the single most important thing you can do for the long-term health of your brain. While the heart and lungs respond loudly to a sprint on the treadmill, the brain is quietly getting fitter with each step, too. For mental fitness, aim for at least 30 minutes of physical activity every other day.

2. Eat, eat, eat

Too much or too little energy throws a kink in the brain’s delicate machinery. A low glycemic diet — high fiber, with moderate amounts of fat and protein — is broken down more slowly in the body than high glycemic foods, such as sweets and white starches. A steady pace of digestion in the gut gives a more reliable flow of energy to the brain, likely optimizing the organ’s long-term health and performance.

3. Watch that diet

While overindulging can make the brain sluggish and lead to long-term detriments to your brain, too few calories can also impair brain function. Extreme dieting can cause some diehards to feel stretches of calm — a feeling that may underlie the addiction of anorexia — but many studies have also linked dieting with distraction, confusion and memory impairment.

4. Take care of your body

Largely preventable diseases — such as Type II diabetes, obesity and hypertension — all affect your brain, too. System-wide health concerns have been linked to an increased risk of cognitive decline and memory impairments. Keeping your circulatory system in working order, by, say, avoiding cigarettes and saturated fat, lessens the onslaught of age-related damage to the brain.

5. Get your beauty rest

When we rest and dream, memories are sifted through, some discarded, others consolidated and saved. When we don’t sleep, a recent study found, proteins build up on synapses, possibly making it hard to think and learn new things. Furthermore, chronically sleeping poorly (in contrast to not enough) is linked to cognitive decline in old age, although the relationship may not be causal.

6. Enjoy your coffee

Growing evidence suggests a caffeine habit may protect the brain. According to large longitudinal studies, two to four perk-me-ups a day may stave off normal cognitive decline and decrease the incidence of Alzheimer’s by 30 to 60 percent. It is unclear whether the benefits come from caffeine or the antioxidants found in coffee and tea, but that latte may improve cognition this afternoon and several decades from now.

7. Eat fish

Some theories credit the introduction of fish into the human diet with the evolution of our tremendous cognitive prowess. Essential fatty acids, such as Omega 3s, are critical to brain function and are proving beneficial for treating such brain-sapping ailments as depression. Studies on the efficacy of Omega 3 supplements, however, have had mixed results, so get doses from food sources, such as flax seeds, fatty fish and grass-fed animals.

8. Chill out

Stress takes a toll on the brain by washing harmful chemicals over the hippocampus and other brain areas involved in memory. Some scientists suspect that living a balanced lifestyle and pursuing relaxing activities such as yoga, socializing and crafting may delay memory impairment by reducing stress.

9. Skip the supplements

Supplements have been getting a bad rap recently, with even the familiar multivitamin now looking like a waste of money — or worse. Brain pills, such as ginkgo and melatonin, likely belong in the trash as well. Despite their “natural” origins, they are not free of potential side effects, such as high blood pressure, digestion trouble, fertility problems and depression. And among healthy individuals, ginkgo offers no brain benefits beyond that of a placebo. (In some cases, the placebo worked better.)

10. Tease Your Brain

Whether crossword puzzles, sudokus and other brain teasers actually keep your brain in shape, has not been well-established. However, lack of education is a strong predictor of cognitive decline. The more you’ve tried to learn, the better you’ll be at mental sit-ups in old age. The key may be tackling something new; the challenge of the unknown is likely more beneficial than putting together the same jigsaw puzzle over and over again.

Eaten many coconuts lately? How about cherries or blueberries or grass-fed beef?

You should, because these are all foods with powerful health properties. However, few people pack their grocery carts full of these items.

Take kiwifruit. It’s chock full of vitamin C–a whopping 115% of what you need to eat in a day. It’s also low in calories–just 45 per fruit, sans skin.

“In America, most people don’t eat three servings of fruit and vegetables a day,” says nutritionist Jonny Bowden, author of seven books including, most recently, The 150 Most Effective Ways to Boost Your Energy. According to him, there are 10 very healthy foods we don’t eat enough of.

Ignore the Food Pyramid

Bowden says many Americans are misled by the U.S. Department of Agriculture’s food pyramid, which is a graphic, pyramid-shaped depiction of nutrition guidelines, updated every five years, that tells Americans what to eat according to food groups. Bowden dismisses it as the product of interest group politics.

“It demonizes fat,” notes Bowden. “Fat is an essential building block for many important compounds in the body.” This is why Bowden puts grass-fed beef, wild salmon and, yes, coconuts, on his top 10 list.

Salmon, in particular, is loaded with omega-3 fatty acids, which are associated with heart and brain health as well as bringing down blood pressure and triglycerides, a risk factor for heart disease. Omega-3s have also been found to improve mood and reduce inflammation, says Bowden.

Another food packed with nutritional value that’s present–but not necessarily front and center in every grocery store–is kale. A member of the cabbage family, which Bowden dubs “vegetable royalty,” kale contains indoles, a compound found to fight cancer. Kale is also rich in antioxidants, which also help prevent cancer, says Bowden.

If that’s not enough for you, kale is also full of sulforaphane, yet another cancer-prevention agent. Kale has calcium, iron and vitamins A, C and K, and two nutrients that are great for the eyes, including zeaxanthin. Kale’s pièce de résistance: Two cups packs three grams of fiber. Try sautéing it with garlic and butter, recommends Bowden. Or eat it like salad, with pine nuts, cranberries and olive oil.

Then there are coconuts, a terribly misunderstood food, according to Bowden. The fat in coconuts is a particular kind that’s good for you. It’s called MCT, or Medium-Chain Triglycerides. The body doesn’t store MCT as fat, says Bowden, but rather uses it as energy, like a carbohydrate. Coconuts are also high in lauric acid, a fatty acid that tends to kill pathogens. In addition, coconut oil is great for cooking since it has a very high smoke point.

Eat Mediterranean

For Bowden, sticking to a Mediterranean-style diet is the healthiest way to eat. That means plenty of fruits and vegetables, whole grains, fish, and lots of olive and nut oils. The Mediterranean diet has indeed been proved by study after study to have multiple healthful properties.

If all that sounds just too darn healthy, consider the 10th food on Bowden’s list: dark chocolate. Rich with a phytochemical called flavanol, found by a 2005 study in the Journal of the American College of Cardiology to improve cardiovascular health, chocolate with at least 60% cocoa content should be a regular on your shopping list.

Chocolate and coconut anyone? OK, but not until you’ve finished your kale.

1. Produce

Piling your plate with fruits and vegetables is a no-brainer when it comes to weight loss — they’re low in calories, high in nutrients, and filling — but the latest studies show that certain ones can provide surprising anti-aging benefits.

There’s buzz about blueberries, for instance, for their memory-boosting potential. But berries of all hues are antioxidant-rich, reports Navindra P. Seeram, Ph.D., assistant professor at the University of Rhode Island College of Pharmacy in Kingston. That means they combat free radicals, molecules that can cause widespread cell damage and are linked to chronic inflammation. Unlike the inflammation that occurs when you sprain an ankle or strain a muscle, the type that contributes to aging is persistent, and thought to be at the root of most chronic diseases, from cancer, heart disease, and diabetes to Alzheimer’s, arthritis, and osteoporosis. Berries’ beauty bonus: They’re chock-full of vitamin C, another potent antioxidant that may help keep your complexion looking smooth by fighting those pesky (skin-damaging) free radicals.

To keep your vision sharp, set your sights on spinach and other dark leafy greens. These veggies are prime sources of lutein and zeaxanthin, plant pigments that protect your eyes from the harmful effects of ultraviolet light. Leafy greens are also rich in vitamin K, a nutrient that plays a role in reducing bone loss and preventing fractures.

2. Protein (Try these One-Dish Dinners)

This key dietary component becomes even more critical starting in the 40s, when muscle mass begins to decline by up to 1 percent a year. That drop slows metabolism, which makes the pounds pile on more easily. The double whammy consequence: Added weight puts your health at risk, and down the road, diminished muscle mass can throw off your balance (upping chances of a fall), sap your strength, and even threaten your ability to recover from an illness or accident.

To hang on to your metabolism-boosting muscle — and keep you feeling full after meals (another protein plus) — experts recommend eating plenty of skinless chicken and turkey breast, lean beef and pork, eggs, beans, and seafood. And don’t forget protein-rich dairy: Minerals (primarily calcium, phosphorus, and potassium) in fat-free milk and yogurt as well as low-fat cheeses help to keep blood pressure healthy, pudge in check, and bones strong. News flash: Calcium can’t build bone if you’re not getting enough protein, and current recommendations — about five ounces a day for a 145-pound woman — are too low, says Robert P. Heaney, M.D., professor of medicine at Creighton University in Omaha. Our Anti-Aging Meal Plan provides about 11 ounces of protein daily.

Another reason to spoon up some yogurt: Eating at least 1/4 cup every day led to a 60 percent lower risk of gum disease and a 50 percent lower risk of tooth loss in a Japanese study published in the Journal of Periodontology. The effect is thought to be linked to the probiotics in yogurt, but not in most other dairy.

3. Omega-3-Rich Fish

Fatty acids in seafood help quench the flames of chronic inflammation. In addition, “there’s very good new data suggesting that omega-3 fats from fish act on an area of the brain that leads to improved mood and attitude among healthy people,” says Artemis P. Simopoulos, M.D., author of The Omega Diet. These improvements in outlook lead to feeling healthier and more vigorous, she explains. The omega-3s in fatty fish like salmon and tuna have the most potent anti-inflammatory effects. But it’s smart to consume omega-3s from plant sources, like walnuts and flaxseed, too — especially if you’re not fond of fish.

Oats and barley

These grains contain beta-glucan, a type of fiber with antimicrobial and antioxidant capabilities more potent than echinacea, reports a Norwegian study. When animals eat this compound, they’re less likely to contract influenza, herpes, even anthrax; in humans, it boosts immunity, speeds wound healing and may help antibiotics work better. At least one in your three daily servings of whole grains.

Garlic

Garlic contains the active ingredient allicin, which fights infection and bacteria. British researchers gave 146 people either a placebo or a garlic extract for 12 weeks; the garlic takers were two-thirds less likely to catch a cold. Other studies suggest that garlic lovers who chow more than six cloves a week have a 30 percent lower rate of colorectal cancer and a 50 percent lower rate of stomach cancer. Eat two raw cloves a day and add crushed garlic to your cooking several times a week.

Fish and shellfish

Getting adequate selenium (plentiful in foods like oysters, lobsters, crabs and clams) increased immune cell production of proteins called cytokines in a British study of 22 adults. The scientists say that cytokines help clear flu viruses out of your body.

Of all fats, omega-3s — found in fish such as Pacific salmon — created the highest blood levels of flu-fighting T cells and interferon-gamma cytokines in a British study of 150 people.

Mushrooms

For centuries, people around the world have turned to mushrooms for a healthy immune system. Contemporary researchers now know why. “Studies show that mushrooms increase the production and activity of white blood cells, making them more aggressive. This is a good thing when you have an infection,” says Douglas Schar, director of the Institute of Herbal Medicine in Washington.

Shiitake and maitake mushrooms, now available fresh in U.S. supermarkets, appear to pack the biggest immunity punch. They’re easy to use too. Just add a handful to pasta sauce, saute with a little oil and add to eggs, or heap triple-decker style on a frozen pizza. Good news for absent-minded chefs: “Basically, you can burn them, and they will still powerfully stimulate the immune system,” says Schar.

Beef

Zinc deficiency is one of the most common nutritional shortfalls among American adults, especially for vegetarians and those who’ve cut back on beef, a prime source of this immunity-bolstering mineral. And that’s unfortunate, because even mild zinc deficiency can increase your risk of infection. Zinc in your diet is very important for the development of white blood cells, the intrepid immune system cells that recognize and destroy invading bacteria, viruses, and assorted other bad guys, explains William Boisvert, Ph.D., an expert in nutrition and immunity at The Scripps Research Institute in La Jolla, Calif.

A 3-ounce serving of lean beef (enough to make a respectable, but not decadent, roast beef sandwich) provides about 30 percent of the daily value for zinc. That’s often enough to make the difference between deficient and sufficient. Just can’t stomach beef? Try zinc-rich oysters, fortified cereals, pork, poultry, yogurt or milk.

Chicken soup

When University of Nebraska researchers tested 13 brands, they found that all but one (chicken-flavored ramen noodles) blocked the migration of inflammatory white cells — an important finding, because cold symptoms are a response to the cells’ accumulation in the bronchial tubes.
The amino acid cysteine, released from chicken during cooking, chemically resembles the bronchitis drug acetylcysteine, which may explain the results. The soup’s salty broth keeps mucus thin the same way cough medicines do.

Added spices, such as garlic and onions, can increase soup’s immune-boosting power. Have a bowl when feeling crummy.

Tea

Take frequent tea breaks this winter, and you may just get through it without a sniffle. Immunologists at Harvard University discovered that people who drank five cups of black tea a day for 2 weeks transformed their immune system T cells into “Hulk cells” that pumped out 10 times more cold and flu virus-fighting interferon — proteins that defend against infection — than did the immune systems of those who didn’t drink black tea. Green tea should work just as well.

“Not just the common cold and flu, but food poisoning, infected cuts, athlete’s foot — even diseases such as tuberculosis and malaria — are caused by germs that your body fights with interferon. We think the interferon boosts from tea may help prevent or lessen the severity of all these conditions,” says Dr. Jack Bukowski of the Harvard Medical School.

While five cups a day may seem like a lot, he thinks fewer cups may still offer some valuable protection. “And the interferon link may explain tea’s other health benefits, including its reported cancer-fighting power, since we already know that interferon slows the growth of tumor cells,” he says.

Sweet potatoes

You may not think of skin as part of your immune system. But this crucial organ, covering an impressive 16 square feet, serves as a first-line fortress against bacteria, viruses and other undesirables. To stay strong and healthy, your skin needs vitamin A. “Vitamin A plays a major role in the production of connective tissue, a key component of skin,” explains Dr. David Katz, director of the Yale-Griffin Prevention Research Center in Derby, Conn.

One of the best ways to get vitamin A into your diet is from foods containing beta-carotene, which your body turns into vitamin A. One of the quickest, most delicious ways to get beta-carotene? Serve candied sweet potatoes (canned are fine). Each 1/2-cup serving delivers only 170 calories but 40 percent of the daily recommendation of vitamin A as beta-carotene. They’re so good, you might want to save them for dessert! Think orange when looking for other foods rich in beta-carotene: carrots, squash, canned pumpkin and cantaloupe.

Yogurt

Probiotics, or the “live active cultures” found in yogurt, are healthy bacteria that keep the gut and intestinal tract free of disease-causing germs. Although they’re available in supplement form, a study from the University of Vienna in Austria found that a daily 7-ounce dose of yogurt was just as effective in boosting immunity as popping pills.

In an 80-day Swedish study of 181 factory employees, those who drank a daily supplement of Lactobacillus reuteri — a specific probiotic that appears to stimulate white blood cells — took 33 percent fewer sick days than those given a placebo. Any yogurt with a live and active cultures seal contains some beneficial bugs, but Stonyfield Farm is the only U.S. brand that contains this specific strain. Have two 6-ounce servings a day.

Be sure you chose a yogurt that is no more than 200 calories, 4 grams of fat or less, 30 grams of sugar or less and at least 6 grams of protein.

You can invest half your paycheck in serums and creams - even splurge on dermal fillers and pricey facials - but none of it will get you far without a skin-friendly diet.

Of course, your skin (and the rest of you, for that matter) is best served by a well-rounded diet, including healthy fats, sufficient protein, and lots of fruits and vegetables. But there are a few nutritional standouts that make particularly important contributions to strong, glowing skin:

1. Fish: Fatty fish like salmon, tilapia, and cod are rich in omega-3 fatty acids. And that’s a good thing, because our bodies cannot produce those essential lipids naturally. By adding omega-3s to your diet, though, you can bolster your skin barrier - that is, the layer of lipids that holds onto moisture and keeps irritants out.

There is even evidence that the skin-strengthening effects of omega-3s can improve chronic skin conditions like rosacea and atopic dermatitis, but more research is necessary to confirm that link.

Furthermore, many types of fish (like, once again, salmon and cod) are rich in vitamin D - as dermatologists increasingly emphasize sun avoidance, we also need to emphasize the importance of finding other sources of this vitamin, which is produced during sun exposure.

Don’t eat fish? Many eggs are now fortified with omega-3 fatty acids, and plant sources include flax seed and flax seed oil, walnuts, pecans, and hazelnuts. And a daily vitamin D supplement is a good idea for vegans and meat-eaters alike.

2. Green Tea: It’s inexpensive, easy to add to your routine, and one of the best-researched and most powerful antioxidants around. That’s why green tea is my go-to antioxidant: I drink at least three cups a day to fight aging and inflammation. Some studies even suggest that the antioxidants in green tea reduce one’s risk of skin cancer. So put down that soda and start drinking your way to healthier skin!

3. Broccoli: Rich in vitamins A, C, and K (among many other nutrients), this veggie does more than its fair share of nutritional work. Vitamin A decreases oil production, vitamin C is a powerful antioxidant, and vitamin K can help prevent bruises. So whatever ails you, this green wonderfood might be just what the doctor ordered.

4. Safflower or Sunflower Oil: Omega-3s get a lot more talk, but omega-6 fatty acids - like the linoleic acid in these two oils - are also important for healthy skin. Like omega-3s, they help prevent dry skin and inflammation; they’re also essential for the formation of prostaglandins, hormones that keep all the cells of the body functioning well.

While many diets are actually quite high in omega-6s - sometimes even too high - the key is to get the good ones and not unhealthy versions, like hydrogenated oils. So try sautéing your salmon or broccoli in a little safflower or sunflower oil and double those skin-soothing benefits!

5. Almonds: When it comes to boosting skin’s defenses against aging, inflammation, and even skin cancer, antioxidants are so important that I’m going to add another to my list: A handful of almonds every day boosts your levels of vitamin E, one of the most important antioxidants for skin health. Studies also suggest that consuming vitamin E orally can increase the levels of this moisturizing vitamin on your skin’s surface - great news for anyone prone to dry skin.