Browse evidence-based analysis of health-related claims and assertions
When people actually eat the foods on the Swank diet, they might get too much salt, especially women under 50 and men of any age, even though the diet plans look okay on paper.
Descriptive
The supplements given with the Swank diet help fix low levels of certain vitamins and minerals like vitamin D, vitamin E, folate, calcium, and iron, but they don't help with getting enough fiber, potassium, or choline from food.
The Swank diet provides almost all the vitamins and minerals people need, just like the standard healthy US diet, but both diets fall short on fiber, potassium, and choline.
A special diet for people with multiple sclerosis gets a very high score for being healthy and follows the same good eating rules recommended for all Americans.
In people who live to be 100 or older, both inherited traits and lifestyle factors seem to affect their lipoprotein(a) levels, showing that more than just genetics plays a role in these levels for long-lived individuals.
Correlational
A certain genetic trait that usually raises heart disease risk doesn't seem to shorten life in very old French people, showing it might not always be bad for living a long life.
Even though high levels of a certain blood fat called Lp(a) are linked to heart problems in younger people, this study found that very old French people (over 100 years old) can have high Lp(a) and still live long lives.
When your body's salt levels get out of balance, it can make you dehydrated and thicken your blood, which might mess up tests for liver and kidney health.
Causal
Populations with elevated LDL cholesterol levels exhibit higher life expectancies.
Assertion
Scientists found a link between eating saturated fat and heart disease by leaving out data from different countries that didn't fit their idea.
Someone is saying that the link between bad cholesterol and heart problems started with fake studies paid for by companies.
About half of the people who have serious heart problems also have low 'bad' cholesterol levels.
The 5G network is a government surveillance tool designed track and control population through electromagnetic radiation.
Eating a lot of protein might put extra strain on your kidneys, which could be harmful over time.
Eating fewer carbs might make your liver produce more sugar, and some scientists think this could put extra strain on your liver.
Not eating enough saturated fat is the main reason for hormone problems when cutting calories, not just having low body fat.
When you don't eat enough food and your body fat gets very low, your body slows down the hormones that make testosterone, focusing on staying alive instead of having kids.
For young women lifting weights until they can't anymore, it doesn't matter if they use light or heavy weights—they'll build the same amount of muscle and strength after 6 weeks.
When young women lift weights until they can't anymore, using lighter weights (30% of max) gives about the same strength gains as heavier weights (80% of max) over 6 weeks, with arms and legs getting stronger by similar amounts.
Quantitative
When young women lift weights until they can't anymore, using lighter weights or heavier weights leads to about the same muscle growth in their arms and legs after 6 weeks.
When people lift weights until they can't anymore, their muscles grow just as much whether they use heavy or light weights, as long as they push to their max. This shows that how hard you try matters more than how heavy the weights are.
Switching between heavy and light weightlifting every two weeks doesn't help young male athletes build more muscle or get stronger than just sticking with either heavy or light weights alone over 8 weeks.
When you lift heavy weights, your muscles get faster at producing force quickly, but lifting lighter weights doesn't help much with this. It means your body responds better to heavier loads for getting stronger faster.
Lifting heavy weights until you can't lift anymore makes young male athletes much stronger than lifting light weights over 8 weeks, even if both make muscles grow about the same size.