Nature helps... of course at first itself by developing measures that give bacteria, fungi, plants and animals a chance to be successful in their struggle for life. As a latecomer on Earth, Homo sapiens was gifted with some droplets of the divine spirit of recognition and thus became able to observe, to analyse and recombine skills of other living beings and to use them for his overwhelming career over the last 10,000 years.

Of course fungi, plants, animals and even bacteria were primarily used by mankind as food or as lifestyle products such as beer, but soon it became clear that there was much more potential hidden in these organisms and that they could be used for other purposes, too. Extracts of plants and fungi were recognized as powerful remedies, as medicines, as insecticides or acarizides, as repellents against parasites or even as weapons, e.g. when poisonous compounds from frogs or plants were applied to arrowheads.

Over the last 110 years the pharmaceutical industry has often simulated nature by analyzing complex organic substances taken from living organisms and then producing by synthesis absolutely pure compounds, which mostly consisted of only one single active substance. These products had the advantage of acting against precisely one target and thus produced fewer possible side effects than the complex plant extracts.

However, the more serious side effect was that disease agents could develop resistances to pure medicinal products much more easily. Thus after 70 years of excellent prospects for chemotherapy, some dark clouds appeared and quickly gathered, so that several therapeutic remedies now no longer work.

Therefore in many countries - especially in those where the pure chemotherapeutics are too expensive for the poor population - the cry "back to nature" is becoming louder and louder. This has led to an enormous increase of studies that again use natural extracts as remedies in the fight against diseases.

Thepresent book summarizes examples of promising aspects in a broad spectrum of applications and shows how extracts derived from bacteria, marine organisms, plants or even animals may help to treat infectious diseases, how such organisms may keep away parasites and pests from the bodies of plants or animals, including humans, and how they can be used directly to aid in diagnosis, promote wound healing and even to help catch criminals.

These 15 chapters offer not only basic research on these different fields, but also show how useful and effective products can be developed from research.

Activity of Plants Used for the Treatment of Diarrhoea by Indigenous Traditional Medicine

Efficiency of Different Types of Plant Extracts Against Mosquitoes
Natural Remedies in the Fight Against Mosquitoes
The Neem Tree Story - Extracts that Really Work
The Efficacy of Extracts from Plants - Especially from Coconut and Onion - Against Tape- and Roundworms
Curcumin: A Natural Herb Extract with Antiparasitic Properties
Marine Organisms and Their Prospective Use in Therapy of Human and Animal Health
Benefits and Failure of Imported Animals in the Fight Against Pests
Helminth Therapy to Treat Crohn's and Other Autoimmune Diseases
Insects Help to Solve Crimes
Use of Triatomid Bugs to Gain Blood Probes from Zoo Animals
Xenodiagnosis
Blowfly Strike and Maggot Therapy: From Parasitology to Medical Treatment
Extracts from Fly Maggots and Fly Pupae as "Wound Healer"
Living Medication. Overview and Classification into Pharmaceutical Law.