Hi Reader!

B vitamins get talked about as a group so often that individual ones get lost in the conversation.

This week we're focusing on one specifically, B12, because deficiency in it is widespread, the symptoms are easy to miss, and the consequences of leaving it unaddressed for years are significant.

TOP STORIES

01 — B Vitamins and Energy Support in Midlife: What Women Need to Know​
How B vitamins collectively support energy, mood, and metabolism — and which ones matter most after 40.
→ vitaminsforwoman.com/menopause/b-vitamins-and-energy-support-in-midlife/​

02 — Vitamin B6 for PMS: How This Vitamin Can Ease Your Symptoms​
B6 specifically — and its underappreciated role in mood, hormones, and cycle symptoms.
→ vitaminsforwoman.com/hormonal/vitamin-b6-for-pms/​

03 — B12 for Nails: How Vitamin B12 Can Transform Your Nail Health​
One of the less obvious signs of B12 deficiency — and what happens to your nails when levels are restored.
→ vitaminsforwoman.com/beauty/b12-for-nails/​

FROM THE EXPERTS

Vitamin B12: Why so many women are low and what to do about it

Vitamin B12 is essential for producing red blood cells, maintaining your nervous system, supporting DNA synthesis, and keeping your energy metabolism functioning. Unlike most nutrients, it's found almost exclusively in animal products — which means vegetarians, vegans, and anyone eating less meat than they used to are at real risk of deficiency.

But here's what many women don't realise: even women who eat meat regularly can be deficient in B12. That's because absorption depends on a protein called intrinsic factor, produced in the stomach. As you age, stomach acid production decreases, intrinsic factor decreases with it, and B12 absorption drops significantly — regardless of how much you're eating.

Certain medications also deplete B12. Metformin (used for PCOS and diabetes) and long-term use of acid reflux medications are two of the most common culprits.

Signs you may be low in B12:

• Persistent fatigue and weakness
• Brain fog — difficulty concentrating or remembering things
• Tingling or numbness in hands and feet
• Mood changes — low mood, irritability, or anxiety
• Pale or jaundiced skin
• Glossy, smooth tongue
• Brittle or discoloured nails
• Shortness of breath with normal activity

What to take and how:

Methylcobalamin is the most bioavailable form of B12 and the one your body uses directly. Avoid cyanocobalamin — it's the cheapest form and requires conversion steps your body may not complete efficiently.

Sublingual (under the tongue) B12 bypasses the absorption issue in the stomach entirely and is the most effective delivery method for most people.

Dose: 500–1,000mcg daily for maintenance. If you've been deficient for a while, higher doses under medical guidance may be needed initially.

Have a question? Ask at

​hello@vitaminsforwoman.com​

OUR PICK THIS WEEK

Methylcobalamin B12 1,000mcg — Sublingual

Customers report significant improvements within two days of using this B12 supplement, noting it boosts energy and mood, and helps with muscle soreness and fatigue.

(Every product we recommend has gone through Vitamins For Woman's vetting process. If you buy through links on this page, we may receive a small commission or other tangible benefit. Vitamins For Woman has sole editorial control over this newsletter. Potential uses for the products listed here are not health claims made by the manufacturers.)

Thanks for being elite, Reader.

See you next week!