HITHESH AMIN TRANSFORMATION COACH on Instagram: "Vitamin D and Vitamin B12 deficiency can cause constant fatigue and low energy, body and joint pain (especially in the knees, back, and hips), muscle weakness or cramps, frequent illness due to low immunity, hair fall, and slow recovery after workouts. Many people also experience brain fog, poor memory, lack of focus, dizziness, tingling or numbness in the hands and feet, mood changes like anxiety, irritability or depression, pale or yellowish ski