Dated 27th Feb 2017, the ACC (American College of Cardiology) published a review article on Debunking nutritional myths.
The article supports eating plenty of fruits, vegetables, whole grains, legumes and nuts in moderation. It also mentions that very limited quantities of lean meat, fish, low-fat and nonfat dairy products and liquid vegetable oils may be consumed. It however does not recommend intake of antioxidant pills, juicing and gluten-free diets (unless allergic to gluten).
A summary is provided:
Eggs and cholesterol:
Although a U.S. government report issued in 2015 dropped specific recommendations about upper limits for cholesterol consumption, the review concludes, “it remains prudent to advise patients to significantly limit intake of dietary cholesterol in the form of eggs or any high cholesterol foods to as little as possible.”
According to the authors, coconut oil and palm oil should be discouraged due to limited data supporting routine use. The most heart-healthy oil is olive oil, though perhaps in moderation as it is still higher calorie, research suggests.
Berries and antioxidant supplementation:
Fruits and vegetables are the healthiest and most beneficial source of antioxidants to reduce heart disease risk, the review explains. There is no compelling evidence adding high-dose antioxidant dietary supplements benefits heart health.
Nuts can be part of a heart-healthy diet. But beware of consuming too many, because nuts are high in calories, said the authors.
The authors explain that while the fruits and vegetables contained in juices are heart-healthy, the process of juicing concentrates calories, which makes it is much easier to ingest too many. Eating whole fruits and vegetables is preferred, with juicing primarily reserved for situations when daily intake of vegetables and fruits is inadequate. If you do juice, avoid adding extra sugar by putting in honey, to minimize calories.
People who have celiac disease or other gluten sensitivity must avoid gluten – wheat, barley and rye. For patients who don’t have any gluten sensitivities, many of the claims for health benefits of a gluten-free diet are unsubstantiated.