Presenter of the TV show You Are What You Eat, Gillian McKeith has become one of the UK's most well known writers and presenters on weight loss and nutrition.

Gillian McKeith's advice is generally sound, advocating regular exercise, a vegetarian diet high in organic fruits and vegetables, and the avoidance of processed and high-calorie foods.

Some of Gillian McKeith's other ideas are more controversial and less well supported by research, including her advocacy of detox diets and colonic irrigation, and her suggestions that yeast is harmful, and that the color of food is significance nutritionally.

However it's hard to find too much fault with someone who recommends replacing junk food with fruit and vegetables!

She has published a range of titles including:

Miracle Superfood: Wild Blue-Green Algae: the nutrient powerhouse that stimulates the immune system, boosts brain power and guards against disease
Ten Steps to Perfect Health for New Mothers
Dr Gillian McKeith's living food for health: 12 natural superfoods to transform your health
You Are What You Eat: The Plan That Will Change Your Life
You Are What You Eat Cookbook
Dr Gillian McKeith's Ultimate Health Plan: The Diet Programme That Will Keep You Slim for Life
Dr Gillian McKeith's shopping guide