The real age of your liver, how CBD affects driving, coffee may extend your life, and more health news
How old is your liver?
No matter how old you are, your liver is always roughly less than three years old, according to a new study.
That’s because the liver is constantly renewing itself and replaces its cells equally well in young and old people, the German study explained.
The liver clears toxins from our bodies, putting it at risk of regular injury. To overcome this problem, it has a unique ability to regenerate itself after damage. But it was unclear if the liver’s capacity to renew itself diminished with age.
How CBD may affect your driving
Though it is a cannabis component, very high doses of CBD don’t appear to affect driving, a small Australian study reports.
Researchers from the University of Sydney found that even 1,500 mg, the highest daily medicinal dose of cannabidiol (CBD) tested, did not seem to affect study participants’ thinking skills or driving when tested in a simulated driving situation.
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“Though CBD is generally considered ‘non-intoxicating,’ its effects on safety-sensitive tasks are still being established,” said lead author Danielle McCartney, a research associate at the university’s Lambert Initiative for Cannabinoid Therapeutics.
That morning cup of coffee may extend your life
Folks who take their coffee with a little cream and sugar have reason to rejoice, health-wise.
A new study shows that coffee’s potential health benefits persist, even if you add a bit of sugar to your java.
People who drink any amount of unsweetened coffee are 16% to 21% less likely to die early than those who don’t imbibe, based on data drawn from more than 171,000 British participants without known heart disease or cancer.
And even folks who take their coffee with sugar saw some health benefits, researchers found.
Suicidal ideation, attempts up in transgender, sexual-minority teens
Transgender and sexual-minority adolescents have an increased risk for suicidal ideation and attempt compared with their cisgender and heterosexual peers, according to a study published online June 6 in CMAJ, the journal of the Canadian Medical Association.
Mila Kingsbury, Ph.D., from the University of Ottawa in Ontario, Canada, and colleagues used data from the 2019 Canadian Health Survey on Children and Youth for 6,800 adolescents aged 15 to 17 years.
The researchers report that 16.5 percent of teens indicated some degree of same-gender attraction, 4.3 percent were unsure of their attraction, and 0.6 percent reported a transgender identity.
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‘Good’ versus ‘bad’ fat: Here’s the difference between 5 types of fat found in your diet
What to know about the 5 kinds of fats
When the American Heart Association issued its first recommendations in the late 1950s for a heart-healthy dietary lifestyle, they advised that reducing fat intake and overall caloric intake reduce the incidence of heart disease. But the guidelines didn’t recommend a low-fat diet for everyone.
But has fat gotten a bad rap? In recent years, food trends like Atkins and keto diets have gained popularity for embracing butter, meat, and other fats, often in lieu of high-carb foods. But knowing the difference between which fats are considered healthy and which are not is essential to long-term health and wellness.
As we age, a healthy level of fat intake becomes more essential in maintaining overall health. Dr. Vasanti Malik, a research scientist at Harvard University’s T.H. Chan School of Public Health, confirms that regular fat intake is necessary for certain body functions, such as organ protection, cell growth, and nutrient absorption. Additionally, fat intake maintains cholesterol and blood pressure levels. However, not all fats are created equal and moderation is key.
The medical community has conducted various studies attempting to test the long-held assumption that “fat is bad.” Research has demonstrated saturated fat intake has much less bearing on the development of heart and cardiovascular disease than suspected, or assumed, and more studies continue to reframe the USDA’s position on precisely what type and amount of fat is good for you.
In order to better understand the five types of fat that we consume, DietMenus outlined what you should know about the health benefits or risks of each.
Monounsaturated fats
In order to understand the benefits of monounsaturated fats, you first need to understand the two types of cholesterol. High-density lipoprotein cholesterol, known as HDL or “good cholesterol,” can protect your heart. It carries low-density lipoprotein cholesterol (LDL or “bad cholesterol”) from your arteries to the liver, where the bad cholesterol can be converted to energy and waste.
Monounsaturated fats promote healthy cholesterol levels and help reduce LDL levels. This fat can be found in plant sources such as avocados; nuts such as almonds, pecans, and cashews; and various oils, including olive, peanut, canola, and sesame oil. It is also present in chicken, pork, and beef.
In addition to aiding in the reduction of LDL, monounsaturated fats are also a source of Vitamin E, which is an antioxidant that contributes to reproductive, tissue, and eye health. Using olive oil instead of butter when cooking is an example of how to reduce unhealthy fats in your diet. Another example is snacking on nuts instead of chips or cookies.
All fat is relatively high in calories at 9 calories per gram, so while making sure monounsaturated fat makes its way into your diet regularly, it is important to consume in moderation.
Polyunsaturated fats
Omega-6 fatty acids help manage blood sugar levels and blood pressure, as well as reduce one’s risk for diabetes and heart disease. While the human body can produce nearly all the fatty acid it requires to function, it cannot naturally produce linolenic acid, which is a key omega-6 fatty acid. A balanced diet that includes whole-grain carbohydrates, seeds and nuts, and plant oils such as sunflower or corn oil is the only way for the body to get the omega-6 it requires.
Omega-3 fats
Omega-3 fatty acids are another form of polyunsaturated fat. They aid overall physical function and the body’s metabolism. Omega-3 fatty acids have been shown to be good for the heart by reducing the buildup of plaque in the arteries and may help reduce the risk of stroke, cancer, the flare-up of arthritis, and inflammation.
There are two categories of omega-3 fats; the first consists of EPA and DHA (eicosapentaenoic acid and docosahexaenoic acid), which are generally found in seafood, notably salmon, tuna, shellfish, and herring.
The other type is alpha-linolenic acid, better known as ALA, which comes from flaxseeds, walnuts, and some vegetable oils. Linseed and canola oils are significant sources of ALA. The USDA’s 2020–2025 Dietary Guidelines for Americans 2015–2020 recommends adults eat at least 8 ounces of seafood per week in order to get the full spectrum of benefits it provides, including lean protein and polyunsaturated fats.
Omega-3s are also available as dietary supplements. Fish oil supplements contain omega-3 in the EPA and DHA form, whereas flaxseed oil supplements contain ALA.
Saturated fats
Saturated fats are what’s known as solid fats because they are usually solid at room temperature. When you see a finely marbled steak at the grocery store, the white in the marbling is solid fat. Saturated fats exist naturally in animal-based foods, notably beef and pork. Saturated fat has been shown to increase the risk of heart disease due to the build-up of low-density lipoprotein (LDL) in the arteries. Alongside this risk comes a heightened risk for obesity and stroke.
Saturated fats exist in many processed foods that are widely popular in America, such as pizza, fast food, and fried foods. The USDA’s most recent iteration of its Dietary Guidelines for Americans recommends limiting saturated fat to no more than 10% of total caloric intake per day, whereas the American Heart Association recommends no more than 6%.
Trans fats
Trans fat is a manufactured product created by adding hydrogen molecules to vegetable oil, a process known as hydrogenation. So when you see “hydrogenated” on a food label, what that means is the product contains trans fats.
One reason trans fats became so prevalent in our food system is they are inexpensive, accessible, and have a long shelf life. Restaurants with commercial fryers found value in trans fats since it could be reused to deep-fry foods, such as fries and breaded chicken products. But that’s not all—trans fat can and does exist naturally in food products such as milk, butter, and cheese, as well as meat products sourced from ruminant animals (e.g. deer, sheep, and goats).
Trans fat is generally considered to be the unhealthiest of all dietary fats—it is a prime constituent of foods that generally lead to weight gain, diabetes, and cardiovascular issues. These include battered and fried food, and mixes used for cakes, pies, and other pastries. Trans fat raises LDL (or “bad cholesterol” levels) and lowers HDL (“good cholesterol”).
The world’s leading nutritional and research bodies have taken up the fight against trans fat. The USDA’s Dietary Guidelines for Americans recommends daily trans fat daily intake be as low as possible without compromising overall nutritional value.
As of June 2018, partially hydrogenated oils can no longer be added to foods, per the U.S. Food & Drug Administration. The World Health Organization released a strategic action package called REPLACE to eliminate industrially produced trans fats globally by 2023.
This story originally appeared on DietMenus and was produced and distributed in partnership with Stacker Studio.
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