Vitamin D and Bone Strength: What Every Woman Over 35 Should Know
Most women don't find out their bones are weakening until they break one.
Osteoporosis, the “silent disease” in which bones become progressively less dense, more porous, and more prone to fracture, works invisibly across decades. By the time it shows up on a scan, years of bone loss may have already happened – and for women, the timeline is unforgiving. In the five to seven years following the onset of menopause, it's possible to lose up to 20% of bone mass as oestrogen levels fall.
But the story starts much earlier than that.
In your mid-30s, the body begins a slow, barely perceptible shift. Energy takes longer to recover. Sleep changes. Hormones fluctuate. And bone density (which peaks in your late 20s) begins its gradual decline. What you do in the decades between that peak and menopause can determine your bone strength over time.
This is where Vitamin D comes in. Not as a trend or a wellness buzzword, but as one of the most critical nutrients for the female body as it ages. Without adequate Vitamin D, the body cannot properly absorb calcium, no matter how much of it you consume.
As the brand behind the UK’s original and bestselling longevity supplement, we chose to include Vitamin D in our Morning & Night formula – based on years of research and development and expert advice from our Chief Nutritionist, Lindsey Ormond. With a clinically proven blend of 28 science-backed Vitamins, Minerals, Amino Acids, Adaptogens and Omega 3s, Morning & Night supports bone strength and whole body health as you navigate your 30s, 40s, 50s and beyond.
What’s Really Happening to Your Bones After 35
Bone isn't static. It's living tissue in a constant state of flux – breaking down and rebuilding in a continuous cycle called remodelling. In your 20s, rebuilding wins. But somewhere around your mid-30s, the balance quietly shifts, and breakdown begins to edge ahead.
For women, this process doesn't just accelerate with age, it can accelerate sharply. As oestrogen levels decline during perimenopause and menopause, the body loses one of its most powerful defenders of bone mineral density. The result: bones that become progressively more porous, more brittle, and more vulnerable to fracture – often without a single warning sign.
The research is clear on this point: the relationship between declining oestrogen, vitamin D status, and skeletal deterioration is one of the most consistently documented connections in women's health. And yet it remains one of the most under-discussed – until a fracture forces the conversation.
As a female-founded brand rooted in science and empowerment, we know that the time to think about bone health isn't after a diagnosis, it's now.
The Vitamin D-Calcium Connection
Vitamin D plays a critical role in helping the body absorb calcium – the primary mineral responsible for bone structure and strength. But without sufficient Vitamin D, calcium absorption becomes significantly less efficient, regardless of how healthy your diet appears on paper.
But its role extends beyond calcium alone. Emerging research suggests vitamin D may also influence:
A 2024 systematic review published in the British Journal of Nutrition found that Vitamin D supplementation positively influenced markers associated with bone metabolism in women, particularly in those with lower baseline Vitamin D levels.
Meanwhile, another 2024 review focusing on menopausal women concluded that vitamin D supplementation may support bone mineral density, calcium absorption, postural balance and fall reduction – although researchers noted that optimal dosing still requires further study.
In other words: Vitamin D is not a standalone cure for bone loss, but it remains one of the key nutritional building blocks for maintaining skeletal resilience over time.
More recently, a 2024 study published in the European Journal of Nutrition examined collagen peptide supplementation before bedtime and observed reductions in sleep fragmentation alongside improvements in cognitive performance in adults with sleep complaints. Given Glycine is one of collagen’s primary amino acids, these findings add to growing interest in Glycine-rich formulations for overnight recovery.
While Glycine cannot be marketed as a treatment for insomnia or sleep disorders under EU nutrition and health claim regulations, emerging research continues to explore its role in supporting relaxation and sleep quality as part of a balanced lifestyle.
The Vitamin D Gap: Why So Many Women Don't Get Enough
Lumity HQ is based in London, UK, where we only enjoy 48 fully sunny days each year! If it weren’t for our Morning & Night supplement, our Vitamin D levels would be lacking.
Despite its importance, Vitamin D deficiency remains surprisingly common – particularly in northern European countries where sunlight exposure is limited for much of the year.
Modern lifestyles compound the issue:
Women over 35 may also face additional risk factors linked to hormonal shifts, dieting history, gut health changes, and body composition. And unlike nutrients that produce immediate noticeable symptoms, low Vitamin D can be difficult to detect until fatigue, weakened immunity, muscle aches, or bone concerns become more pronounced.
The New Conversation Around Foundational Wellness
One of the biggest misconceptions in wellness is treating nutrients in isolation. Bones do not rely on vitamin D alone. They depend on a broader nutritional ecosystem involving calcium, magnesium, vitamin K, protein intake, muscle health, sleep quality, and movement.
In fact, some recent analyses suggest that vitamin D supplementation appears most effective when combined with wider nutritional and lifestyle support, rather than taken in isolation.
This is where foundational supplementation becomes important. Rather than megadosing individual nutrients reactively, many experts now advocate for consistent daily support designed to work with the body’s natural rhythms. It’s about consistency.
The most effective routines tend to support the body across multiple systems simultaneously:
That’s why we’ve built our Morning & Night supplement around the holistic needs of the female body, with circadian rhythm in mind.
Morning prioritises:
Night prioritises:
Together, they create a more complete foundation – one designed not to provide a temporary boost, but to support long-term resilience, health and wellness.
We know that no standalone Vitamin D supplement can stand up to a carefully calibrated, synergistic, foundational supplement.
With Vitamin D and 28 biologist-selected Vitamins, Minerals, Amino Acids and Omega 3s, Morning & Night supports whole body health on a cellular level – noticeably improving skin, hair, nails, sleep, energy, immunity, mood and more after just a few weeks of use.
Author: Rachel Chalmers
I really feel like the Morning & Night for Men supplements have had a positive impact on me... especially on energy levels, recovery after exercise and hair strength. All things that I want to improve the older I get.
I have taken Morning & Night for nearly ten years now, beginning at age 50. I noticed first improvement in my sleep, followed by improved hair growth, hydration, skin clarity, and nail strength after a few months. As a result, my immune system seemed to improve. I also had the energy to up my exercise routine and have continued consistently with weekly strength and cardio training for ten years.
It is never easy getting older, but I've found that taking Morning & Night has definitely given me more energy, my skin is starting to have a glow and most importantly, I am now having an undisturbed sleep at night.
Everything You Need To Know About Lumity
Why choose Lumity?
Choosing Lumity means choosing results, simplicity, and long-term support. Our clinically backed Morning & Night formula delivers essential nutrients in sync with your body’s natural rhythm — helping you feel your best through every stage of life, including menopause. When you subscribe, you’ll save 20% instantly, receive a FREE luxury Starter Kit with refillable glass bottles (worth £25), and enjoy free UK delivery on all orders. Our zero-hassle subscription keeps you consistent — and consistency is key. Commit to 12 weeks and experience real, lasting benefits: improved energy, sleep, skin, immunity, and overall wellness.
Lumity supports you at a cellular level, every day, without the guesswork
Does the Morning & Night Supplement support hair growth/loss?
Morning & Night contains three key amino acids related to healthy hair growth and condition; Cysteine, Arginine and Lysine; as well as Selenium, Biotin and Zinc, which also support strong and healthy hair. In our Clinical Trial, 92% of participants noticed improved hair quality after 12 weeks of consistent use.
How long will I need to take Lumity Morning & Night before experiencing benefits?
Everyone's chemical composition is entirely unique, so while some people may notice benefits in the first few weeks of use, others may need to wait longer before seeing results. Our supplement is designed to work at a cellular level, and as with any other supplement, it takes around 12 weeks of consistent use to experience the full range of benefits. You can learn more about the science behind Morning & Night here.
Why softgel capsules?
Softgel capsules offer optimum protection and bioavailability of the active ingredients in Morning and Night and stop the nutrients degrading. Softgels are comfortable to swallow and melt in the stomach within 3 to 4 minutes, freeing the active ingredients and delivering fast absorption of the formula.
Why is there a Morning & Night routine?
Morning & Night is designed to work in harmony with the body's circadian rhythm, which means the Morning and Night softgels work on different processes in the body and in conjunction with each other to deliver the best results. You need to take both halves of the formula for it to work optimally and for you to experience the full range of benefits.
