We're constantly hearing about the latest superfoods, and foods we should avoid at all costs. But to make it even more confusing, some foods are worshiped one minute and shut down the next, or vice versa - remember how eggs were once villainized?

To add to that confusion, some leading nutritionists were asked what foods they won't go near, and many of their choices are rather surprising, including these.

Raw Kale and Other Cruciferous Vegetables

Top nutritionist Dr. Marilyn Glenville says she would never eat kale or other cruciferous vegetables, which includes broccoli, Brussels sprouts, cabbage and cauliflower, raw on a regular basis.

These veggies are considered goitrogens, which means they can affect thyroid functioning. If your thyroid is underactive, it can easily lead to weight gain. That's especially important for women who tend to be more prone to thyroid issues. Eating them cooked, on the other hand, is fine as the goitrogenic effects is deactivated, even when the vegetables are only lightly steamed.

Canned Tomatoes

Tomatoes have a high level of acidity which could lead to corrosion of the metal of the can, increasing the potential risk for metal poisoning, according to nutritionist Rosemary Ferguson. While some cans are lined with plastic, that's not much better as that material can leach into the tomatoes and interfere with the endocrine system. If you can't use fresh, look for tomatoes sold in glass jars over canned.

Soy Milk

Henrietta Norton, specialist in women’s nutrition, children’s nutrition, pregnancy and fertility, says soy milk isn't the healthy food it's hailed to be. Not only is it highly processed, but it contains trypsin, something that can inhibit protein digestion and interfere with pancreatic function. It also contains phytic acid, which can inhibit the absorption of vital minerals like zinc, iron, calcium and magnesium.

If you're looking for a milk alternative, choose unsweetened, organic almond milk or hemp milk instead.

Brown Rice

Eating a large amount of brown rice can also be a concern as it contains arsenic. Low levels of the substance are found in many crops, but rice, whether organic or not, has 10 to 20 times more than other crops as it's grown in flooded conditions that allow for
easier absorption of arsenic into the rice.

Basmati rice has lower levels, and brown rice usually contains more arsenic than white because of the husk. When using rice, always rinse it thoroughly before cooking and use plenty of water in the cooking process.

Probiotic Yogurt

While plain, organic yogurt is fine, most probiotic yogurts are loaded with sugar which defeats the purpose of eating it in the first place.

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