

Avocados, which are actually classified as a fruit, are low in fructose and rich in healthy monounsaturated fat and potassium, and research has confirmed the avocado's ability to benefit vascular function and heart health.
Personally, I eat a whole avocado virtually every day, which I usually put in my salad. This increases my healthy fat and calorie intake without raising my protein or carbohydrate intake by much.
Avocados are also very high in potassium (more than twice the amount found in a banana) and will help balance your vitally important potassium-to-sodium ratio. Avocados also provide close to 20 essential health-boosting nutrients, including fiber, vitamin E, B-vitamins, and folic acid. Besides eating them raw, you can use avocado as a fat substitute in recipes calling for butter or other oils.
Another boon of avocados—they're one of the safest fruits you can buy conventionally grown, so you don't need to spend more for organic ones. Their thick skin protects the inner fruit from pesticides.
------ the rest----
2. Swiss Chard
Swiss chard belongs to the chenopod food family, along with beets and spinach. It's an excellent source of vitamins C, E, and A (in the form of beta-carotene) along with the minerals manganese and zinc.3 When you eat Swiss chard, you get a wealth of antioxidant and anti-inflammatory benefits.
3. Garlic
Garlic is rich in manganese, calcium, phosphorus, selenium, and vitamins B6 and C, so it's beneficial for your bones as well as your thyroid. It's thought that much of garlic's therapeutic effect comes from its sulfur-containing compounds, such as allicin, which are also what give it its characteristic smell.
4. Sprouts
Sprouts may offer some of the highest levels of nutrition available, including vitamins, minerals, antioxidants, and enzymes that help protect against free radical damage.
5. Mushrooms
Aside from being rich in protein, fiber, vitamin C, B vitamins, calcium, and minerals, mushrooms are excellent sources of antioxidants. They contain polyphenols and selenium, which are common in the plant world, as well as antioxidants that are unique to mushrooms.
6. Kale
Just one cup of kale will flood your body with disease-fighting vitamins K, A, and C, along with respectable amounts of manganese, copper, B vitamins, fiber, calcium, and potassium. With each serving of kale, you'll also find more than 45 unique flavonoids, which have both antioxidant and anti-inflammatory benefits.
7. Spinach
Spinach is rich in vitamins, minerals, and antioxidants, including folate, vitamin A, iron, potassium, calcium, zinc, and selenium. Spinach also contains flavonoids that may help protect your body from free radicals, while offering anti-inflammatory benefits and antioxidant support. As reported by the George Mateljan Foundation
8. Collard Greens
Collard greens are a close cousin to kale and they are, nutritionally, very similar. Rich in vitamin K and phytonutrients – caffeic acid, ferulic acid, quercetin, and kaempferol – collard greens help lower oxidative stress in your cells while fighting inflammation. Collard greens contain glucosinolates called glucobrassicin that can convert into an isothiocyanate molecule called indole-3-carbinol, or I3C, a compound with the ability to activate and prevent an inflammatory response at its earliest stage.
9. Tomatoes
Tomatoes—especially organic tomatoes—are packed with nutrition, including a variety of phytochemicals that boast a long list of health benefits. Tomatoes are an excellent source of lutein, zeaxanthin, and vitamin C (which is most concentrated in the jelly-like substance that surrounds the seeds), as well as vitamins A, E, and the B vitamins, potassium, manganese, and phosphorus. Some lesser-known phytonutrients in tomatoes include:
Flavonols: rutin, kaempferol, and quercetin
Flavonones: naringenin and chalconaringenin
Hydroxycinnamic acids: caffeic acid, ferulic acid, and coumaric acid
Glycosides: esculeoside A
Fatty acid derivatives: 9-oxo-octadecadienoic acid
10. Cauliflower
One serving of cauliflower contains 77 percent of the recommended daily value of vitamin C. It's also a good source of vitamin K, protein, thiamin, riboflavin, niacin, magnesium, phosphorus, fiber, vitamin B6, folate, pantothenic acid, potassium, and manganese. Cauliflower is a good source of choline, a B vitamin known for its role in brain development, and contains a wealth of anti-inflammatory nutrients to help keep inflammation in check, including I3C, which may operate at the genetic level to help prevent the inflammatory responses at its foundational level.18 Compounds in cauliflower also show anti-cancer effects. According to the National Cancer Institute:19
"Indoles and isothiocyanates have been found to inhibit the development of cancer in several organs in rats and mice, including the bladder, breast, colon, liver, lung, and stomach."
11. Onions
To date, onions have shown a wealth of beneficial properties; they're anti-allergic, anti-histaminic, anti-inflammatory and antioxidant,22 all rolled into one. Polyphenols are plant compounds recognized for their disease prevention, antioxidant and anti-aging properties. Onions have a particularly high concentration, with more polyphenols than garlic, leeks, tomatoes, carrots and red bell pepper.
13. Organic Pastured Eggs
Proteins are essential to the building, maintenance, and repair of your body tissues, including your skin, internal organs, and muscles. Proteins are also major components of your immune system and hormones. While proteins are found in many types of food, only foods from animal sources, such as meat and eggs, contain "complete proteins," meaning they contain all of the essential amino acids. Eggs also contain lutein and zeaxanthin for eye health, choline for your brain, nervous and cardiovascular systems, and naturally occurring B12.
Eggs are powerhouses of healthy nutrition, provided they're harvested from organically raised, free-range, pastured chickens. The nutritional differences between true free-ranging chicken eggs and commercially farmed eggs are a result of the different diets eaten by the two groups of chickens. You can tell the eggs are free range or pastured by the color of the egg yolk. Foraged hens produce eggs with bright orange yolks. Dull, pale yellow yolks are a sure sign you're getting eggs from caged hens that are not allowed to forage for their natural diet. Your best source for fresh eggs is a local farmer that allows his hens to forage freely outdoors.
14. Organic Coconut Oil
Besides being excellent for your thyroid and your metabolism, coconut oil is rich in lauric acid, which converts in your body to monolaurin, a monoglyceride capable of destroying lipid-coated viruses such as HIV and herpes, influenza, measles, gram-negative bacteria, and protozoa such as Giardia lamblia. Its medium chain fatty acids (MCTs) also impart a number of health benefits, including raising your body's metabolism and fighting off pathogens.
15. Nuts
Mounting research suggests that nuts may help you live longer and even support weight loss. This isn't so surprising considering the fact that tree nuts are high in healthy fats that, contrary to popular belief, your body needs for optimal function. My favorite nuts are macadamia and pecans, as they provide the highest amount of healthy fat while being on the lower end in terms of carbs and protein. The main fatty acid in macadamia nuts is the monounsaturated fat oleic acid (about 60 percent). This is about the level found in olives, which are well known for their health benefits.
And a Bonus: Bone Broth
Bone broth contains a variety of valuable nutrients, including calcium, collagen, and bone marrow, in a form your body can easily absorb and use. Homemade bone broth may help reduce joint pain and inflammation, promote strong bones, and boost hair and nail growth.
http://articles.mercola.com/sites/articles/archive/2015/04/13/30-healthiest-foods.aspx