This is Dr Sarah Myhill's comprehensive guide to health care for health practitioners and motivated patients alike - armed with this knowledge, wellness and an optimal health-span should be within our grasp and the grasp of all those we care for. Easy to follow, logical and evidence based, Dr Myhill shows how, if we can get the basics right, disease specific benefits will follow. She does not pretend it's easy but the incentives are undeniable. A range of case histories - organised by body system to match earlier chapters - show how to apply the theory in this book to ourselves and to those we care for, personally and/or professionally. Using principally the PK diet, vitamin C, iodine, sleep and exercise, plus Dr Myhill's 'Groundhog regimes' (so called because they require constant repetition), ecological medicine can be available to all both practically and affordably. Changes for the new edition include completely revised chapters on the PK diet, iodine, vitamin C and eye health; a greatly expanded chapter on skin health; new information throughout on covid-19, vaccinations, uric acid metabolism, tackling inflammation, importance of boron, thyroid health and treatment, plus many new references