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Proponents of food diaries know: the benefits are real and quantifiable. Some studies even show that people who kept daily food diaries lost nearly twice as much as people who were more inconsistent.

Discover the key differences between animal fats like tallow and lard and vegetable oils like olive and sunflower oil. Learn about their pros and cons, including cooking stability, flavor, and health benefits, to find the best option for your dietary needs and kitchen goals.

Are you counting sheep at night? Or watching television hoping your eyelids will grow heavy and you will blissfully drift off to sleep? If you're struggling to get enough rest it's time to get back to basics: relax, create a bedtime ritual, move your body during the day. These and other tips from Health By Principle will help you sleep at night.

“Rest” has been given a singular definition in modern society, but what if there are many facets to feeling truly rested? We take you on a deep dive: from Maslow’s hierarchy of needs, to cultural challenges and a new take on what it means to rest, including the 7 types of rest. 

It's flu season time, and it's time to get prepared. Typically, people go for their flu shots and try other remedies to keep them protected. Promising new research has come out showing that vitamin D may be another effective way to prevent getting flu symptoms.

Vitamins D2 and D3 are essential for the absorption of calcium in your gut, which aids bone growth and your immune and neuromuscular systems. Nearly half the US population is deficient in vitamin D, but too much can be dangerous. Learn more about IUs and bioavailability to select the best vitamin D supplement.