Harvard MD's 5 Signs of Nutrient Deficiency

• Brittle nails may indicate low protein or iron deficiency.
• Twitching eyelids or limbs can signal magnesium deficiency.
• Joint clicking or hip pops might be an early sign of vitamin D or calcium deficiency.
• Premature greying is often linked to low vitamin B12 or copper deficiency.
• Easy bruising may suggest low vitamin C or vitamin K1 levels.

Why It Matters: Recognize deficiency symptoms to proactively improve your health.