What would you recommend as healthy meats for someone to try a diet of only meat and potatoes?

Beef, pork, chicken. Sounds like a delicious diet to me!

If you're going to stick to a lot of meat, then eat grass fed/grass finished meat as often as possible. It's more nutritious than grain fed.

I would think lamb is the healthiest meat, though it's not cost-effective and it's hard to find.

Leave the skins on the potatoes. That's where a lot of the nutrients are.

A healthy diet means a well balanced diet that provides you with the proper amounts of protein, vitamins, minerals, antioxidants, complex carbohydrates, and essential fats.

A meat and potatoes only diet is no where near a healthy diet. While protein and carbs are essential nutrients, your body needs more than that to keep you healthy. For one thing, too much protein and carbs is just as bad as not enough protein or carbs.

The most common misconception people have is thinking that if X amounts of something is good, then much more of it must be better which is not true. Too much of anything, even that which is healthy, is unhealthy. Meaning your goal is about balance and not going into the extremes.

As for supplements, they cannot replace a well-balanced meal for many reasons. First, not all supplements are created equal. Just because a supplement contains a nutrient, it does NOT mean your body can absorb it. For example calcium, a piece of chalk is nearly 60% calcium, but if you ate one you will not even get 0.5% of the calcium content. But if you ate just 3/4 cups of cottage cheese, you get around 100 mg of calcium. You take supplements as an insurance to cover your bases, not as the primary source of your nutrition.

That diet will kill you. Not nearly as fast as one containing regular sugars.

Healthy meats are truly ANY that are not corn-fed, which most US animal products are.

Instead, go for grass-fed or wheat fed. Pasture fed is best.

Eat only wild caught seafood unless the farmed animals are not corn-fed, like farmed shrimp.

Seafood, poultry, eggs, lamb and grass-fed beef are all high in omega 3 fatty acids, which reduce inflammation, blood triglycerides and improve neural function. All are also listed highest to high in the amino acid tryptophan, which is the building block of the brain's serotonin.

Corn-fed animal products are high in branched chain amino acids, and like fructose and alcohol, regular use spells liver dysfunction that causes obesity, diabetes II and most heart disease along with a laundry list of other crap.

Including acne and IBS.