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Heavily dependent on the age-old food pyramid, the Mayo diet emphasizes what, and in what amount, you should consume. Physical activity is part of the plan.

This diet is designed for people diagnosed with irritable bowel syndrome (IBS).

Best for people diagnosed with celiac disease, the GF-free diet is also appropriate for people who believe they have a non-celiac sensitivity to wheat.

Not just a diet, this cholesterol-fighting diet includes an exercise regimen and weight control.

This cholesterol fighter restricts consumers to 2,000 calories per day from a variety of plant food and soy protein.

A combination of DASH and Mediterranean diets, the MIND diet boasts 10 food groups that are administered in specific amounts. It’s designed to support cognitive fitness.

The acronym stands for Dietary Approaches to Stop Hypertension. It concentrates on lots of vegetables, fruits, and grains, with lean meats and low-fat or nonfat dairy foods.

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Here’s what the science shows.