Natural Sources (Food)
Overview of the best natural food sources of vitamins, macro, and microelements for daily needs.

Vitamin C Foods: The 15 Best Sources and How Much You Need Daily
Most people assume citrus is the best source of vitamin C. That assumption is a myth — and it’s centuries old. Back in the 1700s, lemons and limes saved British sailors from scurvy — a brutal disease caused by vitamin C deficiency that made gums bleed, teeth fall out, and the body essentially fall apart […]

Foods High in Vitamin D: Best Sources and How Much You Actually Need to Eat
If you live anywhere north of a line running roughly through San Francisco, Richmond, and St. Louis — which covers most of the country — the winter sun sits too low in the sky to do one of its quietest but most important jobs. From about November through March, your skin makes almost no vitamin […]

Omega-3 Foods: The Complete Guide to the Best Plant and Animal Sources
Only about 5 adults in 100 across the U.S. and Europe get enough omega-3 — a gap that nutrition surveys flag year after year. Most people can name salmon and flaxseed oil on cue, but the specifics get fuzzy fast: How many ounces of fish actually cover a daily target? Does a spoonful of chia […]

Zinc in Food: Best Dietary Sources and How to Improve Absorption
Zinc deficiency is one of the most common nutrient shortfalls in the world. The WHO estimates that more than 2 billion people are affected — nearly one in four people on the planet. Yet most never realize it, because the earliest signs (a weaker immune system, slow-healing wounds, brittle nails, hair loss) are easy to […]