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The holiday season is probably the hardest time of year to resist rich, indulgent foods, but too many salty, fatty, sugary choices can harm your health. Instead, try adding natural flavor to holiday foods with herbs and spices, many of which contain substances that have a beneficial effect on health.

An ad campaign sponsored by the milk industry claims that milk is better than water for hydration. A few studies appear to support the claim, but they involved a small number of subjects and have important limitations.

Plant-based meat alternatives (PBMAs) might be safe to eat — in moderation — as a replacement for red meat in the diet. The best options are PBMAs that have the fewest ingredients and lowest levels of salt and saturated fat. PBMAs shouldn't be paired with unhealthy foods, such as French fries, soda, or refined grains (white bread or buns). Other substitutes for red meat include vegetables and legumes, such as a large portabella mushroom cap, homemade bean burger, or thick slice of eggplant or cauliflower.

While there may be valid reasons to follow a ketogenic diet in the short term (weight loss, blood sugar control), it's difficult to maintain and could cause other health issues.

Summertime offers a great variety of fresh vegetables. Making vegetables the focus of a meal has many health benefits, and anyone can take advantage of this by preparing them in simple yet delicious ways.

One in three Americans takes a daily multivitamin even though research shows this doesn't provide any meaningful health benefits for most people. And because of the way supplements are regulated, some supplements make claims that have no evidence behind them.

Nutrient deficiencies are uncommon with a broad and varied diet. But aging, hormonal factors, or diet can leave women short of four key vitamins and minerals: vitamin D, iron, vitamin B₁₂, and calcium. Various tests can reveal nutrient deficiencies, including blood panels. Vitamin D and fish oil supplements may help prevent autoimmune diseases. Multivitamins are usually unnecessary, except in cases where age, pregnancy, digestive challenges, or certain medications interfere with the ability to get adequate nutrition.