Evidence-based health education

Food, supplements, and straight answers

Healthy living, made clearer.

I want to

Where do I start if I want to eat better?

With a meal you already eat. Name what is in it and look for more than one kind of food. Our suggestion, not a clinical rule: if one easy addition fits how you eat and what you can get, make it, and if the meal already works, leave it alone.

  1. Try this

    At one meal a day, name what is on the plate before changing anything.

  2. Read
  3. Look at

    CellSentials The daily multivitamin and mineral: its full label as text, and what a day of it adds up to.

Does any supplement help with strength training?

In the trials we reviewed, creatine monohydrate has a steady safety record in healthy adults, the longest about two years, and its best-supported benefit is modest: a little more strength gain when it is paired with resistance training, including for older adults. The guide lays out the evidence; it does not tell you whether to take it.

  1. Try this

    Choose strength exercises you will actually repeat. In the trials, the benefit came with the training, not instead of it.

  2. Read
  3. Look at

    Clear Protein + Creatine Mix 10 g of protein per serving, and USANA says 5 g of creatine. The panel as text, and what it leaves out.

How do I choose a supplement without doubling up?

FDA does not approve supplements before they are sold, so the label, the marketing claim, the research, and your own safety each need their own check. Then add up what you already take: some of the products on this site repeat the same nutrients, and together they can pass an adult upper limit.

  1. Try this

    Write down everything you take, with its label. If any of it is on this site, add those products up in the stack builder.

  2. Read
  3. Use

    The stack builder Pick products and see their daily totals against adult upper limits.

What should I read first on a Nutrition Facts label?

The serving size and the servings per container, before any other number. When comparing two foods, first check whether their serving sizes match. Then read each amount with its %DV: FDA's general guide calls 5% DV or less low and 20% DV or more high for a nutrient per serving.

  1. Try this

    Compare two foods you already buy, serving size first.

  2. Read
  3. Look at

    BiOmega Practice on a Supplement Facts panel: every row as text, with what it does and does not tell you.

Or compare the supplements, or browse every guide.

Start with a question

Good places to start.

Every guide tells you what it covers, where the information comes from, and where the evidence runs out. If you are not sure where to begin, start with the meal.

  1. Building balanced meals

    How to build a balanced meal without rigid rules

    A flexible way to notice what a meal already contains and decide whether one practical addition would be useful.

  2. Reading food labels

    How to read a Nutrition Facts label

    A repeatable way to interpret the serving basis, percent Daily Value, ingredients, and allergen information on FDA-regulated packaged foods in the United States.

  3. Supplement evidence and safety

    Are supplements FDA approved? Evidence and safety

    Separate what a label declares from marketing claims, supporting evidence, product identity, and personal safety.

Supplements, compared

A few supplements, looked at closely.

A small selection that changes as formulas do. Each product appears with its current Supplement Facts label and a note on how it overlaps with the others, with the evidence and the caveats sitting right beside it.

Affiliate disclosure: these are USANA products, and Joy Health may earn a commission when you shop through this link. The price and our evidence standards do not change.

See current products and prices

How we work

How every guide gets made.

We synthesize research, provide sources, and separate evidence from interpretation. Joy Health provides general education, not medical advice, diagnosis, or treatment.

  1. Scope the question

    Work out what the guide can honestly answer before writing a word.

  2. Read the sources

    Follow every health claim back to research or an accountable institution.

  3. Separate the roles

    Keep what a source found separate from what we make of it.

  4. Name the limits

    Say plainly what the evidence cannot settle, and who has a stake in the answer.