Denis Stewart discusses the safety and toxicity of herbs.

Denis Stewart discusses some more uses of lemon balm, and answers questions from listeners.

Denis Stewart discusses the uses of lemon balm, and answers listeners' questions.

Denis Stewart brings us his observations of humanity over the holiday season.

Herbalist Denis Stewart discsses the history of medicine from bees and honey, and answering questions from listeners.

Denis Stewart discusses where he sees herbs working best.

Some therapies or modalities are based on principles that are not recognised by conventional medicine, but have an established evidence base and have been proven to work for a limited number of health conditions. Denis Stewart discusses the efficacy of complementary medicine, in particular herbal remedies.

Iris diagnosis is a useful method of assessment that offers the potential to expand the physician's understanding of a patient's overall state of health and vitality. Denis Stewart discusses the standardisation in iris diagnosis.

Coffee can help people feel less tired and increase energy levels. Denis Stewart talks about the benefits of coffee.

Our beloved cup of joe might have a darker side. Denis Stewart discusses new research finding that long-term caffeine intake could exacerbate symptoms of Alzheimer's disease.