• Billionaire entrepreneur Mark Cuban said longevity is advancing so much that 60 is the new 40.
• While anti-aging science can be high-tech, what Cuban has shared about his own routine is simple.
• His low-cost longevity habits include walking regularly, eating vegetarian, and taking vitamins.

Mark Cuban isn't ready to act his age.

Speaking in the new anti-aging science documentary "Longevity Hackers" (streaming on Amazon and Apple TV) the billionaire businessman of "Shark Tank" fame said he feels decades younger than his biological age of 66.

"60s are the new 40s," Cuban said."You see guys my age in their 60s that can look good, can be fit, and not be limited in terms of things that they do."

While some entrepreneurs are spending millions on anti-aging routines, what we know about Cuban's routine is relatively simple — and doesn't cost much to follow.

Here's what Cuban has said about the diet, exercise, and supplements that keep him feeling youthful.

"If I never had to look in the mirror, I'd think I was 35," he said.

He walks as much as possible — including on the set of 'Shark Tank'

Exercise has been a major part of Cuban's routine for years, and it's crucial to healthy aging.

"I actually work out more now than I did 10 years ago or 15 years ago because my body needs it more," he said.

The entrepreneur said he typically spends between 45 to 90 minutes in the gym, including plenty of cardio.

He also stays moving whenever possible. While Cuban is not slated to star on "Shark Tank" in 2025, he said previous seasons of the show were a great opportunity to get his steps in.

"Everybody else is taking the carts, the set is .35 miles away, and I'm walking back and forth so I'm walking two miles a day while we're shooting Shark Tank," he said.

Walking more is also linked to a longer, healthier life, and as little as 500 extra steps a day can make a difference, according to research.

He's a vegetarian

Cuban has followed a vegetarian diet since 2019.

"When you get older, food becomes more like medicine where you need the nutrients in order to be able to be your best self," he said.

Plant-based diets rich in nutrient-dense foods like greens, whole grains, nuts, and beans are linked to a longer life and lower risk of chronic diseases.

"What I eat really makes a difference in how everything in my body operates," Cuban said.

Cuban said he enjoys plant-based food — and he's invested in plenty of vegan and vegetarian food companies — but the downside is that it can make it tricky to dine out or attend events.

"I love being vegetarian. It can be weird when you're with a bunch of guys going to a steakhouse," he said.

He supplements with vitamin D and melatonin

Cuban rounds out his nutritional needs with daily supplements to reduce inflammation and improve sleep, he previously told Business Insider.

He supplements melatonin, a hormone naturally produced by the body to regulate its internal clock.

Cuban also takes vitamins D and E, both of which are linked to healthy aging. Vitamin D helps the body absorb calcium, which is crucial for healthy bones, while bolstering the immune system to lower the risk of cancer. Vitamin E also supports the immune system and lowers inflammation, reducing the stress on cells to potentially stave off age-related damage.

He said being able to invest in his health with simple, daily habits has paid dividends by allowing him to keep up with the activities in his life that matter.

"To me, aging is just being who are you regardless of what the number is," Cuban said.

Bryan Johnson spends $2 million a year on longevity treatments. We spent a day with the tech entrepreneur who wants to live forever, getting a close-up look at his antiaging meals, supplements, clinical procedures, and daily exercise routine.

• The celebrity personal trainer Don Saladino shared his daily supplement intake with Business Insider.
• Health experts generally advise a "food first" approach, but supplements can fill nutritional gaps.
• Saladino's regimen includes multivitamins, omega-3, creatine, magnesium, and vitamin D.

Don Saladino takes his health and fitness seriously.

The 47-year-old New York-based personal trainer has worked with celebrities including Ryan Reynolds, Blake Lively, and Anne Hathaway.

Saladino told Business Insider he's dedicated to eating and training optimally, and he strives for continuous improvement as he ages.

"Is my body composition better now than it was when I was in my 20s? Yes," Saladino said. "Am I as strong now as I was when I was in my 20s? Yes. Can I do all the things now that I did when I was in my 20s? One hundred percent. No doubt. I feel like my physique gets better and better."

While nutrition, training, and sleep play the biggest roles, supplements are also a part of Saladino's lifestyle.

Experts in various fields generally recommend a "food first" approach (meaning striving to get all the nutrients you need from food), as overdoing supplements can have harmful side effects. However, everyone's requirements are different, and supplements can help people fill gaps.

Saladino takes the vast majority of his supplements with his first meal of the day. Having that as his routine helps him remember to take them, he said.

He shared his list of 11 daily supplements with BI.

Multivitamin

While much existing research suggests multivitamins have minimal impact, some studies suggest they can be beneficial for memory in older people, and the National Institutes of Health said they could help people who aren't getting enough of certain nutrients.

Omega-3 fish oil

Omega-3 fatty acids in foods such as oily fish are well-established to benefit heart health. They slow the build-up of plaque (which blocks the arteries), lower blood pressure, and reduce triglycerides, a type of fat in the blood.

But whether fish-oil supplements provide the same benefits as eating oily fish is still inconclusive.

Creatine monohydrate

Creatine occurs naturally in foods such as red meat, and it helps the body produce energy for intense activity.

"It's one of the most highly researched supplements out there, and I can't tell you a reason not everyone should be taking it," Saladino said.

Emerging research also suggests links between creatine and mental-health and cognitive benefits, too.

Magnesium

Saladino takes a magnesium supplement before bed, he said.

Magnesium is involved in various bodily processes, including regulating muscle and nerve function, managing blood sugar, and making protein, bone, and DNA.

The recommended daily amount for adults is between 310 and 420 milligrams, depending on age and sex. This amount can also be attained by a large handful of almonds or eight small potatoes.

Vitamin D

Vitamin D is important for bone health, mood, and immunity support. We can get vitamin D through sunlight and food, but supplements are recommended to help keep bones, teeth, and muscles healthy.

Rhiannon Lambert, a registered nutritionist, previously told BI that people in the UK and countries with similar levels of sunlight should supplement with vitamin D, especially in the winter.

Resveratrol

Resveratrol is a chemical found in red grapes (and also red wine and grape juice). It may be beneficial for people with hay fever or for those looking to lose weight, the National Library of Medicine says, and some think it has anti-inflammatory, anticancer, heart-health, and brain-health benefits.

Research is divided, however, on whether it's effective for humans when consumed in pill form, as BI previously reported.

Urolithin A

Urolithin A is a compound naturally found in foods such as pomegranate. It can help mitochondria function better to power our cells with energy — this is a process that deteriorates with age, so urolithin A is considered promising for antiaging.

A study published in 2017 found that pomegranate juice extended the lifespan of fruit flies, and a 2022 study found that older adults who were given 1000 mg of urolithin A per day for four months had significant improvement in muscle endurance.

Protein powder

Protein is important for overall bodily function, but it's especially important for active people, as it helps muscles rebuild and repair after workouts.

"There's nothing magical about protein powder, and it's not a necessity, but it's a huge convenience factor," Cliff Wilson, a physique coach, previously told BI.

Amino acids

Amino acids are the chemical building blocks of protein. They're found in protein-rich foods, or there are specific supplements such as branched-chain amino acids and essential amino acids.

There's little evidence that these supplements improve endurance, but there are potential benefits for strength training. That said, if you're getting enough protein through your diet, supplements are probably unnecessary, according to the NIH.

Glutamine

Glutamine, another amino acid, is produced by the body and found in food such as eggs, beef, and tofu. Saladino mixes his glutamine supplement with creatine, salt, and water and drinks them together in the morning, he said.

Potential benefits of glutamine supplements include reducing muscle soreness after workouts, boosting the immune system, and supporting muscle recovery. But studies suggest that they don't necessarily lead to more muscle growth.

Curcumin

Curcumin is the active chemical found in the spice turmeric. It's been found to reduce inflammation, boost heart health, reduce cancer risk, promote healthy skin, and improve brain function.

• Science-washing is when a company markets itself as science-backed without proper research.
• Some companies attach doctors to a product to give it credibility or cherry-pick research.
• A nutritionist who works in the industry explained how to notice these tricks.

A nutritionist who works in the food industry broke down the marketing tricks companies use to make them seem more grounded in science than they are.

The global wellness industry is now estimated at $6.3 trillion, giving companies lots of incentives to draw in consumers even if the science behind their products isn't solid — a process called science-washing.

Emily Prpa, a nutrition lecturer at King's College London who also works in the food industry, described them in a call with Business Insider.

Trick 1: Skipping proper research

Prpa said the first thing you should do when deciding if a product is worth buying is check if the company is doing its own research.

Firsthand research is expensive, and companies often cobble together existing studies to back up their products.

For example, they could cite the benefits of individual ingredients without actually assessing whether the combination in their product is effective.

This is especially prevalent with greens powders, which contain lots of different vitamins, minerals, and probiotics.

"A lot of the time, I see that they have vitamins and minerals that compete for the same absorption channel, so actually you're not going to be getting the exact dose that they say you will on the packet," she said.

Companies can also cherry-pick which studies they include, she said, ignoring unfavorable research.

If a company has funded independent clinical trials to test their product, they're likely to make that clear on their website, Prpa said. "They'll often be very proud to state that because it's giving them that distance and showing that this isn't biased."

Trick 2: Flashy endorsements

Sometimes a company will attach a doctor or other professional to a product. They might bring them on as a scientific or medical advisor or publicize that they endorse the product.

This can give the consumers the impression that the company is credible, but that's not always the case, Prpa said. "Does that product really hold up to the claims on the website?"

It isn't necessarily a red flag if a doctor is the face of a product, Prpa said, but that alone does not mean a product has health benefits.

"You are not buying the medic as your private consultant, you are buying a product," she said.

Trick 3: Promises that sound too good to be true

It sounds simple: if a product is marketed as a fix for stacks of health problems, it's probably overpromising.

"I don't know a product or an app on the market that can simultaneously lower blood sugars, improve sleep, improve cognition, and focus," Prpa said. "If it is sounding too good, it probably is."