Fiona Corliss, Nutritional Therapist and Colon Hydrotherapist

Fiona is a Naturopathic Registered Nutritional Therapist and Colon Hydrotherapist specialising in gastrointestinal health, menopausal issues, chronic fatigue and weight issues.

Tel: or 07817 921916 Email:

Fiona Corliss Colon Hydrotherapist and Nutritionist

Battle Healthy Living Clinic

Old Brewery Yard,
High St,
Battle, East Sussex
TN33 0AF

The Chilston Clinic

12 Rusthall Rd,
Tunbridge Wells,

The Wellington Centre

44 Wellington Sq
East Sussex 
TN34 1PN

Vitamin D, the ‘Sunshine Vitamin’

Vitamin D is commonly known as the sunshine vitamin as the human body produces vitamin D when exposed to sun, but it can be found in a variety of food sources too.

Vitamin D regulates the levels of calcium and phosphate in the body, which is important for healthy bones and teeth and it also supports the health of the brain, nervous and immune systems. Studies have shown Vitamin D may also help to regulate insulin levels, aiding management of diabetes, provide protection against cancer and prevention and treatment of inflammatory skin diseases.

Who is more at risk from vitamin D deficiency:

It is estimated that 1 billion people have vitamin D deficiency or insufficiency worldwide (, ), common risk factors include:

  • Elderly
  • Dark skin.
  • Overweight or obese.
  • Not eating much fish or milk.
  • Always using sunscreen.
  • Being indoors.

What are the signs of Vitamin D deficiency?

The signs of vitamin D deficiency are very subtle and may not be noticed easily. The following are signs and symptoms of vitamin D deficiency:

How do I know if I am vitamin D deficient?

Symptoms of low vitamin D levels are often subtle and non-specific which make it hard to be sure it’s a deficiency and not something else.  To be sure, you can speak to your doctor and ask for a blood test or visit a Nutritional Therapist who can perform a vitamin D testing service.

How can I increase my vitamin D levels?

Sunlight is the most common and efficient source of vitamin D; it is estimated that sensible sun exposure on bare skin for 5-10 minutes 2-3 times per week allows most people to produce sufficient vitamin D.  Other ways of increasing vitamin D are by eating certain types of food (certain types of oily fish, fish oil, eggs, chicken, mushrooms) or by taking vitamin D supplements. A Nutritional Therapist can advise you on the optimum foods to include in your diet to improve vitamin D levels and also on taking supplements.


For more information on any of the services offered and to book an appointment, please call 07817 921916 or email

Contact details

Mob:07817 921916

Battle Healthy Living Clinic
Old Brewery Yard
High St
Battle TN33 0AF

The Chilston Clinic
12 Rusthall Rd
Tunbridge Wells

The Wellington Centre
44 Wellington Sq
Hastings TN34 1PN

Recent recipes

Delicious Summer Pesto Recipe

Pesto can be made from a variety of greens and these are so readily available in the Summer.


  • 100g Kale (with stalks removed), Basil, Carrot Tops, Parsley or Wild Rocket
  • 150ml Olive Oil
  • 75g Unpasteurised Hard Goats Cheese, Ewe’s Cheese or Parmesan Cheese
    (optional – if not using, then add additional garlic and lemon juice to compensate)
  • 50g Mixed Nuts chopped finely in a Food Processor in advance
  • 1 Small Garlic Clove, crushed
  • Pinch of Celtic Sea Salt
  • Squeeze of Lemon Juice

Medley Of Greens Soup

Serves 3


  • 1 carton of organic cannelini beans
  • 1 x handful of coriander leaf
  • 1 lemon juiced
  • coconut butter for frying
  • half a broccoli head in florets
  • 2 small leeks
  • 2 cloves garlic
  • half tsp of cumin
  • water to dilute as required
  • 1 bag of organic watercress, rocket or spinach

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