You have low iron
If you’re constantly wondering ‘Why am I always cold?’, iron-deficiency anemia might be to blame. Red blood cells need iron to carry oxygen into the blood, and low levels of iron could hurt your circulation, says registered dietitian nutritionist Alyssa Tucci, MS, of Compass Nutrition. “Coldness in extremities—hands and feet—is most pronounced, because the body is smart, so it diverts blood to vital organs like the heart and brain first,” she says. Meat is the most common dietary source of iron. Leafy greens and legumes are good sources, but pair them with a vitamin C-rich food like red pepper for maximum absorption, she says; it’s harder to absorb iron from plants. Don’t ignore these signs of iron deficiency.
You need more vitamin B12
“People might assume they’re not getting enough iron when it’s really a B12 issue,” says certified holistic nutrition coach Andrea Moss, founder of Moss Wellness. Vitamin B12 anemia can cause coldness, numbness, and low energy, she says. Like iron, most B12-rich foods are animal products, so vegetarians might have a tough time getting enough. Vitamin B12 is found in eggs, yogurt, and cheese. Vegans can sprinkle nutritional yeast—a cheesy-tasting powder—on popcorn or baked potatoes.