Myth: 

You will be healthier if you avoid fats, sodium and sugar altogether.

Diabetes, hypertension and water retention are three cases where this is a valid point indeed. If your physician has asked you to shun any of these, then please, by all means, do so.

However, your body needs fats, particularly healthy Omega-3 fats found in fish. Fresh fruit, which is definitely an important part of your diet, contains sugar. And salt is required for many vital bodily functions.

So unless your physician has prescribed a diet that excludes any of these three items, moderation — not elimination — is the key.