A healthy diet rich in vegetables, fruit, protein and healthy fats can help you feel your best. Alison Cullen, Nutritional Practitioner and Education Manager at A.Vogel, has shared four tips to help you improve your diet. Eat bitterly. Bitter foods, such as rocket and cabbage, can have a number of health benefits, including preventing acid reflux and supporting a healthy. digestive system. "The use of herbal bitters (and foods) to balance the production of gastrin and thereby regulate the production of digestive enzymes is long-standing in naturopathic and herbal medicine, hence the term 'bitter tonic' and the use of bitters as aperitifs.”