Tatiana Ayazo/Rd.com, shutterstock Possible deficiency: Stomach acid
Having inadequate stomach acid doesn’t seem like a vitamin issue, but it can prevent you from breaking down nutrients in food and fully absorbing the vitamins and minerals you need. One possible cause: taking an over-the-counter heartburn medication, which will decrease your stomach acid, says Small. Some people find that taking some apple cider vinegar with water with a meal or taking a digestive enzyme (available as a supplement) can help. Bonus: “This can cut down on bloating after eating,” she says. These are the vitamin mistakes you don’t even realize you’re making.
Tatiana Ayazo/Rd.com, shutterstock Possible deficiency: Vitamin D
Being tired all the time, despite getting adequate sleep, is a red flag that your D is chronically low. If your doctor suggests you’d be a good candidate for a vitamin D supplement, studies show that they may be able to improve fatigue symptoms. (Though your doctor would advise you to take a much smaller dose daily.) “After people get more vitamin D, it’s amazing to hear them say they have so much more energy,” says Small. To fit more D into your diet, go for fortified dairy (yogurt, milk), non-dairy (almond or soy milk), certain fish (sardines), and even mushrooms grown under UV light. Here are more ways to get vitamin D from foods.
Bruising on your legs
Tatiana Ayazo/Rd.com, shutterstock Possible deficiency: Vitamin C
If you merely bump into something and wind up with an enormous bruise, consider if you’re getting enough C. Surprisingly, it’s on the list of nutrients Americans frequently fall short on, according to Health.gov. Vitamin C helps make collagen, which is involved in making blood vessels. Bruising often “may be a sign that you have weakened capillaries that allow you to bruise,” says Small. What’s more, stress saps your supply of vitamin C, meaning you may need more than you think. Strawberries, broccoli, and mango are all foods that have more C than an orange. Here are some more signs you’re running low on vitamin C.