The chill is already in the air, and most of us are already pulling out our scarves and gloves to keep out the frost.

When we’re repeatedly jumping between the warm heated homes to the frosty and chilly streets, we expose ourselves to a higher risk of infection. The sun setting below the horizon in the afternoon doesn’t seem to help with the mood either.

Well, we’re here to give you some delightful tips to help keep you on top of your game, and keeping your immunity ready to fight off those lurking colds!

Vitamin D against the winter blues

Vitamin D is mood-lifting and can be produced by the body with the help of sunlight. But since natural sunlight in winter isn’t abundant, you should seek out food containing Vitamin D to match your deficit. These are primarily foods such as fish (We’re talking about salmon, tuna and cod), eggs, avocado, mushrooms and chlorella

Vitamin D is readily available in the sunny months, as our bodies can absorb this wonder nutrient through our skin. Once this is in our system, Vitamin D helps to regulate the calcium and phosphate in our body. As a result, we maintain healthy bones, teeth and muscles. 

A recent study published in the British Medical Journal the effects of Vitamin D and its support in preventing colds and flus. Their analysis suggested daily or weekly vitamin D supplementation was useful in preventing respiratory tract infections.

Vitamin D helps to improve mood, and is also used in the treatment of depression. Many parts of the brain, including those involved with depression, contain receptors for Vitamin D. It may increase the available serotonin, which has a direct effect on improving sleep, social behaviour, and even memory.

Another study showed that people who had a higher lean mass and muscle mass also had higher levels of active vitamin D. This suggests that active Vitamin D may help to optimize muscle strength. 

Sun Chlorella is a rich source of Vitamin D, thanks to it’s Chlorophyllor “stored sunshine”. Sun Chlorella is one of the easiest ways to compliment your diet naturally.  A full daily serving of Sun Chlorella (approx 3g-5g) will give you as much as 200 – 600IU / 5 – 15mg of vitamin D per day. 

Read on to see the other suggestions we’ve got to help keep your immunity in check this season.

1. Eat plenty of fresh greens

The nations top dietitians are always telling us to colour our plates with fresh vegetables and fruits. These are natures own edible rainbows, and we can fortify our immune system by ensuring we’ve got our natural vitamins, fibre, minerals and phytochemicals. 

2. Shop for seasonal products

Be on the lookout for regional and seasonal fruits and vegetables, since valuable ingredients can be lost by lengthy transport and storage times. Winter varieties such as pumpkin, chicory, radicchio, root vegetables and all kinds of cabbage are particularly good at this time of year.
With fruits, choose varieties that are harvested in late autumn, such as apples, pears, pomegranates and grapes. And in case you had any doubts, frozen vegetables and fruit are better than their reputation!
These fruits are shock-frozen shortly after harvest, so that a  good portion of micronutrients are saved. Just keep an eye out for any preservatives or artificial ingredients and defrost produce gently – overnight in a refrigerator.

3. Red fruits protect your cells

Fruits that have an antioxidant effect protect you from harmful free radicals that can easily damage body cells particularly in winter. At the forefront of natural antioxidants are pomegranates and berries. The latter are scarce in winter, so it’s worth getting hold of frozen versions. Blending these up into smoothies and adding in Sun Chlorella powder is also a great way to supercharge your smoothies too.

4. Nuts keep you awake

Did you know that the shorter days, and reduction in sunlight exposure increases your sleep hormone melatonin? This probably explains why we feel so much more lethargic, tired, and unmotivated.

A good way to keep this in check though, is by getting your serotonin levels boosted instead! This chemical is produced in the amino acid tryptophan, and is the complete opposite of Melatonin.
Now it’s worth mentioning that Sun Chlorella is also high in tryptophan – living up to it’s superfood reputation!
Now back to the nuts, in case you were wondering which nuts are good, then you can consider all of them – from cashews, to almonds and hazelnuts.  

6.Warm-up from the inside

With the cold weather outside, you’d want to keep as many hot foods and drinks with lots of spices inside your house and on your menu. These will not only warm your organs and muscles internally, but they also stimulate blood circulation, metabolism, helping your body develop a resistance to low temperatures. If you include ginger, turmeric, cinnamon and nutmeg in your meals, you don’t only jazz up the flavour of your food, but you can also use them to prepare delicious teas.

Immune Boosting Chlorella Lemon Ginger Tonic


  • 1 Tbsp Fresh Grated Turmeric
  • 1 Tbsp Fresh Grated Ginger
  • 1 Whole Lemon Juice
  • 3 Cups Filtered Water
  • 1 Tbsp Honey
  • 3g/1 Tsp Sun Chlorella Powder 


1. Add the turmeric, ginger, lemon juice and water into a small saucepan. Remember to stir the mixture. 
2. Bring to a simmer over medium to medium-high heat for about 2~3 minutes, then turn off the heat.
3. Set a small strainer over serving glasses and divide between two mugs. 
4. Add honey, and Sun Chlorella Powder  and enjoy. 


About Sun Chlorella

Sun Chlorella's founder, Mr. Hideo Nakayama, was suffering from post-World War II health complications. At only fifty-one years old, doctors gave him a few years to live. Mr. Nakayama had almost succumbed to his conditions until a friend introduced him to chlorella. Full of gratitude, Mr. Nakayama decided to devote the rest of his life to the research and the spread of chlorella’s wonderful benefits to all over the world. Sun Chlorella pioneered a unique process that pulverized chlorella’s tough outer cell wall, ensuring maximum digestibility and nutrients - a process that has made Sun Chlorella one of the most digestible chlorella on the market.