FORGET 'Veganuary'. Don't even consider 'Dryanuary'. There is only one January dietary resolution that can benefit both the planet and your own nutritional health – Organuary!

Established by the charity Public Health Collaboration, Organuary participants are encouraged to include organ meats in at least one meal, twice per week, within their diet throughout the month.

The PHC has a mission to improve public health by promoting nutritional facts to counter popular fads – and the truth about offal is that it is packed with vitamins and iron. On the environmental side, there is also a strong argument for making best use of the 'fifth quarter', as that extracts the maximum dietary value from livestock raised and thus reduces waste.

Speaking on behalf of Organuary, Sam Feltham said: “In the UK, livestock farming has a carbon footprint that is 2.5 times lower than the global average. This is partially because UK livestock are up to 90% grass fed and 85% of their water consumption comes from rainwater. Therefore, it is our view that if you buy standard British farmed organ meats, it’s potentially at least carbon neutral, if not a net benefit for carbon sequestration."

Dr Zoë Harcombe, author and public health researcher, who presents the vitamin and mineral content of different foods at conferences around the world, agreed that that liver tops the charts for retinol – the form of vitamin A that the body needs – most of the B vitamin group, and was outstanding for iron, while providing valuable amounts of other micronutrients.

“If you want to win a nutrient contest, pick liver and you’ve won,” said Dr Harcombe.

The Association of Independent Meat Suppliers has announced that it is supporting Organuary. Spokesman Tony Goodger said: “Offal sales in the UK declined by 13% in the last year, however Organuary will help remind consumers of the great value for money as well as the environmental benefits which are derived from eating more of the animal.

“Organuary’s message is simple – ‘Minimise Waste, Maximise Nutrition’ to which we would add, ‘Eat More, Eat Better’. Eat more of the animal and eat better by ensuring that the offal you are buying is from UK Farm Assured stock,” he said.