This is what you could eat on a typical day on the longevity diet...

Breakfast Tea with freshly squeezed lemon (use 2 teabags – 1 green tea and 1 black tea). Cereal (60g) with almond milk (240ml). Lunch Wild rice and green beans with garlic and fresh tomato

● 40g wild rice

● 150g green beans

● 150g fresh tomatoes

● 2 cloves of garlic

● Salt (use as little as possible)

● 1 tbsp olive oil

● Lemon

● Fresh basil

● Pepper Cook the wild rice.

In a separate pot, cover the green beans with water and add the tomatoes, garlic and salt. When the beans are tender, add the oil and basil. Let them rest for 2 to 3 minutes before serving over the rice. Serve with 200g leafy green veg (eg, chicory or kale), boiled and seasoned with olive oil and lemon.

Snack Glass of hazelnut milk, unsweetened. Nut and wholegrain dark chocolate bar. Dinner Salmon fillet (wild caught) with asparagus

● 150g salmon fillet

● 300g asparagus

● 1 tbsp olive oil

● Lemon juice to taste

● Salt and pepper to taste

● 200g mixed green salad leaves Steam or bake the salmon fillet and asparagus.

Serve drizzled with the olive oil and seasoned with lemon, salt and pepper. Serve with 200g mixed green salad with tomatoes, carrots, fennel and green peppers seasoned with balsamic vinegar. Dessert 25g hazelnuts and 30g dried cranberries.

An edited extract from The Longevity Diet by Valter Longo, published by Michael Joseph at £9.99. Copyright Valter Longo 2018.