Your best choice is always organic grass-fed beef. Of course, it will be very expensive if you are going for a piece of filet mignon, however, by choosing a cheaper cut or even ground beef, it can become a lot more affordable. At my supermarket, the Organic Prairie 100% grass-fed ground beef sells for $5.99 per pound versus regular ground beef at $3.49. Again, since the toxins tend to accumulate in the fat, if you cannot afford grass-fed, choose the leanest cut of commercially raised beef, such as round or flank steak.

Poultry

Most chicken sold in conventional grocery stores is raised in factory farms. Each full-grown chicken in a factory farm has as little as six-tenths of a square foot of space. Such overcrowded condition paves the way for disease. Did you know that 70% of all the antibiotics produced are used in agriculture to promote weight gain in the livestock?

The best choices are organic, followed by free-range, or cage-free chicken. At Safeway, the O Organics boneless, skinless thighs sell for $5.49 per pound, whereas the regular Foster Farm thighs are $4.49. If you can only afford regular chicken, make sure you remove the skin and fat before eating.

As for eggs, the best is also organic, followed by free-range or cage-free. This is where you want to spend extra and buy the quality eggs from chickens that have not been given any hormones and antibiotics.

Pork

Pork is generally not your ideal choice of meat. Pigs are scavenger animals that will eat just about anything, making them a breeding ground for potentially dangerous infections.

Therefore, if you decide to have the occasional pork for dinner, your best choice is organic pork. Those pigs have been raised in humane conditions without the use of antibiotics and hormones and have never been fed animal byproducts. However, you will notice that very few supermarkets carry organic pork, what they offer is usually "natural" pork.

Natural pork only means that the pork "contains no artificial ingredients and is no more than minimally processed". In reality, this definition can be extremely deceiving, as the USDA (U.S. Department of Agriculture) rule for "natural" meat does not require all antibiotics be eliminated. Consequently, every producer has its own interpretation for "natural". Hence, if the label does not say it has no antibiotics, it probably does.

Fish

If you do choose to eat fish from your grocery store, don't buy farm-raised fish (e.g. salmon, tilapia, catfish, and cod) as numerous studies have found they contain high levels of toxins. Also, avoid large fish (e.g. Chilean sea bass, monkfish, orange roughy, shark, sturgeon, swordfish, and tuna) as they have high levels of mercury.

Your cleanest choices are wild-caught Alaskan salmon and sardines but they can be on the expensive side. Though not the most desirable health-wise, a more economical option is to get the canned version of these fish. However, be aware that most canned foods contain a harmful industrial chemical called BPA (bisphenal A) in the lining of the cans, therefore, do not consume on a regular basis.

Processed foods are usually found in the middle aisles and processed snacks at the end of the aisles and near the checkout counters. Processed foods tend to be expensive for the amount of food you get, especially when you get into all the packaged, name-brand junk foods. To save money, try buying less processed snack foods (e.g. chips, cookies, ice cream, and frozen pizzas) and use the money on organic produce and meats instead.

Soft Drinks And Fruit Juices

This is the aisle that you can skip completely. Soft drinks and fruit juices are merely sugar water; they are a complete waste of money and bad for your health. Drink water instead and eat your fruits.

Frozen Foods

Fresh is always preferable to frozen, and frozen is always better than canned (as almost all cans contain BPA). Eating some pre-frozen food is acceptable but don't overload your diet with it. It is much more nutritious to eat fresh foods as processing destroys some of the enzymes and vitamins in the foods.

• Always buy the produce that is in season. Even organic produce is going to be cheaper when it is in season.
• Skip the pre-cut or prepared foods. They can cost up to double the amount of the unprepared versions.
• If your store offers a bulk bin option, you can buy only the amount you need. It usually works out cheaper as you don't have to pay for packaging.
• Make sure you compare organic prices across stores. In stores that carry less organic items, those items tend to be more expensive.
• Instead of shopping at a conventional grocery store, an alternative is your reputable local farmers market. So is it better to buy local or organic? Organic tells you specific things about how the food was produced and that is what the USDA organic seal indicates. Local is great because you are not wasting energy on transportation, but you want to ask the farmers how the animal was raised or how the crop was produced. Many local farmers follow organic farming methods but don't have the budget to get USDA certified. 
• Make your grocery list and stick to it. Try to cut down on impulsive purchases.