Why Supplementing in Summer Is Just as Important as Winter

Why Supplementing in Summer Is Just as Important as Winter

By Georgie Murphy MSc DipNT mBANT mNTOI, Nutritionist & Gut Health Expert at SISTERLY

Read time: 4 minutes

Summary

  • Summer routines can place greater demands on energy, recovery and immune health.
  • Travel, late nights, alcohol and irregular eating patterns can make it harder to consistently meet nutrient needs through food alone.
  • Sleep disruption, heat and busy schedules may contribute to increased fatigue.
  • Many nutrients work best when taken consistently over time rather than only when you feel depleted.
  • SISTERLY's The Elevator helps support common nutrient gaps created by modern lifestyles and busy summer routines.

Summer Is Wonderful — But It Can Be Surprisingly Demanding

Summer is often associated with feeling healthier. We spend more time outdoors, enjoy holidays, catch up with friends and make the most of longer evenings.

But while summer brings plenty of positives, it can also place additional demands on the body.

More travel, disrupted routines, later nights, alcohol, irregular meals and packed social calendars can all affect recovery, energy levels and overall wellbeing. While these changes are often temporary, they can make it harder to consistently meet your nutritional needs through food alone.

At SISTERLY, we believe wellness should fit around real life — including holidays, festivals, weekends away and spontaneous summer plans.

More Travel Means More Demands on the Body

Summer often means flights, hotels, festivals, crowded events and exposure to new environments.

Travel itself can be physically demanding. Changes in sleep patterns, hydration, meal timings and daily routines can all place additional stress on the body. Being around larger groups of people and unfamiliar environments may also increase exposure to bacteria, viruses and infections.

Nutrients such as vitamin D, vitamin C, folate, zinc, copper and vitamin B12 all contribute to the normal function of the immune system and play important roles in supporting overall health throughout busy periods.

Summer Eating Habits Often Change

Many of us naturally eat differently during the summer months.

There are more meals out, more celebrations, more drinks with friends and often less routine around meal preparation. Breakfasts may be skipped before early flights, lunches replaced with snacks and dinner times pushed later into the evening.

There's nothing wrong with enjoying these moments, but nutritional consistency can sometimes suffer.

The Elevator contains nutrients involved in normal energy-yielding metabolism, including magnesium, vitamin C and vitamin B12, helping support energy production during busier periods when dietary intake may be less predictable.

Sleep, Recovery & Energy

Long evenings, warmer temperatures, travel and social commitments can all affect sleep quality.

Even a few nights of poorer sleep can leave you feeling less resilient and more fatigued. Over time, disrupted sleep may affect recovery, mood, concentration and overall wellbeing.

Sleep is when much of the body's repair and recovery takes place. Poor sleep has been linked to changes in stress hormones, inflammation, immune function and even nutrient status. Research suggests that lower intakes or status of nutrients such as magnesium, vitamin D and zinc may be associated with poorer sleep quality in some individuals, while disrupted sleep itself can increase physiological stress and recovery demands.

Why Consistency Matters

One of the biggest mistakes people make with supplements is only taking them when they already feel depleted.

Many nutrients are involved in processes that occur continuously within the body and may be most beneficial when consumed consistently as part of a healthy lifestyle. Vitamin D is a good example. As a fat-soluble vitamin, it can be stored within the body, but research suggests that vitamin D insufficiency remains common across Europe despite seasonal sun exposure, particularly among individuals who spend much of their time indoors or regularly use sunscreen and protective clothing.

The same principle applies to nutrients such as magnesium, zinc, selenium and B vitamins, which play important roles in energy metabolism, immune function and overall wellbeing. Rather than waiting until you feel run down, evidence suggests that maintaining adequate nutrient status over time may help support long-term health and resilience.

Supporting Summer Wellness

Summer should be enjoyed — not spent worrying about being perfect.

At SISTERLY, we believe wellness is built through simple, sustainable habits. Nutrient-dense food, quality sleep, hydration, movement and consistent nutritional support all help create the foundation for feeling your best throughout the season.

The Elevator was designed to help bridge common nutrient gaps created by busy modern lifestyles, supporting energy, resilience and overall wellbeing all year round.

Because the goal isn't just to get through summer — it's to have the energy to enjoy it.

References

  1. Calder PC et al. Optimal Nutritional Status for a Well-Functioning Immune System Is an Important Factor to Protect Against Viral Infections. Nutrients (2020), 12(4):1181.

  2. Gombart AF, Pierre A & Maggini S. A Review of Micronutrients and the Immune System. Nutrients (2020), 12(1):236.

  3. Cashman KD et al. Vitamin D Deficiency in Europe: Pandemic? American Journal of Clinical Nutrition (2016), 103(4):1033–1044.

  4. Maggini S, Pierre A & Calder PC. Immune Function and Micronutrient Requirements Change Over the Life Course. Nutrients (2018), 10(10):1531.

  5. European Food Safety Authority (EFSA) & European Commission. EU Register of Nutrition and Health Claims and authorised Article 13 health claims under Regulation (EC) No 1924/2006.

  6. National Institutes of Health Office of Dietary Supplements Fact Sheets: Vitamin D; Vitamin C; Magnesium; Zinc; Vitamin B12; Folate

  7. Abbasi B et al. (2012). The effect of magnesium supplementation on primary insomnia in elderly people. Journal of Research in Medical Sciences.

  8. Rondanelli M et al. (2021). Self-Care for Common Colds: The Pivotal Role of Vitamin D, Vitamin C, Zinc and Echinacea. 

  9. Muscogiuri G et al. (2019). The lullaby of the sun: the role of vitamin D in sleep disturbance. Sleep Medicine.

  10. Gao Q et al. (2018). The association between vitamin D deficiency and sleep disorders. Nutrients.

  11. Cherasse Y & Urade Y. (2017). Dietary zinc acts as a sleep modulator. International Journal of Molecular Sciences.

 

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