A glass containing a pink smoothie with half a grapefruit and a bowl of raspberries next to it

Cold-busting grapefruit and berry smoothie

A delicious combination of immune-boosting grapefruit juice, strawberries and raspberries to boost vitamin C.

By Saga Magazine | Published - 4 Nov 2025
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While the vitamin C in the fruit may not prevent you getting a cold, research suggests it helps immune systems to reduce a cold’s symptoms and duration.

The pumpkin seeds add zinc, which seems to help to protect against viruses.

(Hero image credit: Shutterstock)

Cooking Time
10 mins
Serves
1

Ingredients

  • 150ml (5fl oz) pink grapefruit juice
  • 50g (2oz) frozen strawberries
  • 50g (2oz) frozen raspberries
  • 100g (4oz) low-fat Greek yoghurt
  • Handful pumpkin seeds

Method

  1. Combine the juice, yoghurt and frozen berries in a blender until smooth.
  2. Preheat the oven to 180°C/350°F/gas 4 , scatter the pumpkin seeds on a baking tray and drizzle with a little olive oil.
  3. Roast until the seeds are golden brown - about 10 minutes.
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