01/23/2026
☀️ Vitamin D in Winter: Why January Matters ☀️
Vitamin D levels commonly drop in January—and it’s not by accident.
Why levels fall in winter:
• Less sunlight and shorter days reduce natural vitamin D production
• Cold weather keeps people indoors and covered up
• Aging skin produces less vitamin D over time
Who should consider testing and supplementation:
• Adults over 50
• People with limited sun exposure
• Individuals with bone or joint pain
• Those with fatigue, muscle weakness, or frequent illness
• Patients with osteoporosis, obesity, or malabsorption issues
Low vitamin D affects bones, muscles, and immune function. It’s a quiet deficiency—but an important one. Testing and proper supplementation can make a real difference, especially in winter.
Old-fashioned prevention still works: identify deficiencies early and correct them properly.
