Wow, you must really like the science. We've got interviews with scientists and experts in the Journal - read on!
Nutritional Consultant
Emma Davies
“Vitamin D is vital to supplement with because most of us aren't getting outside enough for safe sun exposure on a daily basis. Vitamin D is a key immune modulator, not just boosting the immune system but asking it to behave appropriately - not under or over responding. It's also critical for calcium metabolism and promoting bone health."
Tactical Support
In the body, vitamin D acts more like a hormone, with its effects reaching the gut, immune system, muscles, and brain. Your body can make vitamin D from sunlight exposure on the skin, but most UK adults are deficient. The vitamin D3 formulated within Leapfrog DAILY supports immune function, bone density and calcium absorption
The Game-Changing Nutrient
Helps the body absorb and utilise calcium and phosphorus for strong bones and teeth, supports normal muscle function and female reproductive health, and plays a crucial role in maintaining a healthy immune system, especially in countries with limited sunlight, such as the UK
Form
Colecalciferol, a natural form of vitamin D3
Dose
25mcg / 1000 IU per DAILY tablet (RDA 20mcg for adults and children from age 12)
Immune Defence
Helps immune cells respond to pathogens and limits excessive inflammation, reducing susceptibility and severity of some infections
Stronger Bones and Teeth
Supports calcium and phosphate absorption to build and maintain strong bones and teeth
Improved Muscle and Neuromuscular Function
Contributes to normal muscle contraction and nerve signalling, supporting strength, coordination, and reducing the risk of falls, especially in older adults
Supports Mood and Brain Health
Low levels are associated with higher rates of depression and some chronic pain conditions
Metabolic and Heart Health Support
Insufficient vitamin D has been linked to higher rates of high blood pressure, heart disease, and type 2 diabetes.
Regulates Female Hormones and Cycles
Acts in the ovaries, endometrium, and the hypothalamic–pituitary axis to help support more regular ovulation and menstrual cycles
Protects Bones During Menopause
Helps counteract oestrogen‑related bone loss in peri‑ and post-menopause by
maintaining calcium absorption and bone mineral density
Facts & Figures
We are keeping up to speed with the research on Vitamin D. Here are some of the latest clinical studies, critically assessed by peers and published independently.
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Design: Review of 13 studies
Participants:
Dose:
Duration:
Results: Vitamin D supplementation may support mood and cognition via BDNF modulation, especially in people with insufficient vitamin D levels (<30 ng/mL)Read study here.
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- Design: Systematic review and meta-analysis
- Participants: -
- Dose: -
- Duration: -
- Results: Results support the hypothesis that vitamin D supplementation can reduce negative emotions. Patients with major depressive disorder and individuals with vitamin D deficiency are most likely to benefit from supplementation.
Read study here.
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- Design: Narrative literature review
- Participants: -
- Dose: -
- Duration: -
- Results: Vitamin D status greatly impacts female reproductive health by influencing menstrual cycle, fertility, and pregnancy outcomes. To maintain an optimal health status among fertile women, adequate vitamin D levels must be ensured through a combination of sunlight exposure, diet, and supplementation.
Read study here
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- Design: Randomised, placebo-controlled trial
- Participants: 25 male athletes ages 19-22 with vitamin D deficiency
- Dose: 5000IU per day
- Duration: -
- Results: A daily dose of 5000 IU of vitamin D3 reduces the RTI symptoms following four weeks of winter training in vitamin D-insufficient male taekwondo athletes.
Read study here.
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- Design: Review article from data and studies
- Participants: -
- Dose: -
- Duration: -
- Results: The current rapid ride in VDD cases of and its impact for prevention and onset of numerous diseases underscores the importance of studies regarding this vitamin and its associated effects for clear mechanisms.
Read study here.
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- Design: Meta-analysis
- Participants:
- Dose: -
- Duration: -
- Results: The meta-analysis seems to support the use of vitamin D, especially in populations with vitamin D deficiencies, in the prevention of COVID-19 infection and in the prevention of related complications.
Read study here.