spectrum diet

my hubby wants to go on the spectrum diet by dr dean ornish , his dr suggested it

 any one know about it

It focuses on healthy, fresh, seasonal foods, vegetables and fruit.  Nothing is entirely off-limits, but how much you can partake in some foods (including poultry, refined carbs, sugar, and alcohol) depends on your goal. For example, it's easy to eat a vegetarian, vegan, or low-fat diet on this plan. Meat lovers and people who eat a lot of highly processed foods may find it hard to adapt to this plan.