So, is veganism a good idea?

"Veganism is one of the healthiest dietary lifestyles...if done properly," reports LiveScience of Clinton'su00a0eating regimen. "It is also one of the unhealthiest diets in town if not done properly, which is often the case."

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Animal products are packed with nutrients such as protein, omega-3 fatty acids (in fish), calcium, iron, zinc, and vitamin B12.

This means in order to consume vital nutrients, vegans need to be extra-vigilant by eating calcium-rich dark, leafy greens such broccoli, kale, turnip greens and collards, zinc-filled nuts and beans, omega-3 fatty acids in flaxseeds, and protein-rich foods such as beans every single day, adds LifeScience.

Unskilled or new vegans can also fall into the traps of making poor food choices due to limited food options, or rely on meat substitutes, which can be loaded with salt and fat.

MyPyramid.gov recommends that vegans consume beans, nuts, nut butters, peas, tofu, tempeh and veggie burgers to meet protein needs.

"I like the vegetables, the fruits, the beans, the stuff I eat now," Clinton told Dr. Sanjay Gupta in the CNN interview.

His diet strategy now, he says, is to avoid any food that might damage his blood vessels, and to follow the guidance of famed plant-based food proponent Dr. Dean Ornish and Dr. Caldwell Esselstyn Jr., who directs the cardiovascular prevention and reversal program at The Cleveland Clinic Wellness Institute.