Who does not enjoy staying young? Especially when you can do it with just tweaking your diet a little! A recent study published in Nature Publishing Group Aging, reveals that a nutrient-rich diet, similar to the Mediterranean style plays an important role in slowing brain aging.

The study used blood biomarker analysis, brain imaging and cognitive assessments to conclude that specific nutrients like fatty acids, antioxidants, carotenoids, vitamin E, and choline, are essential to support healthy brain function and delay cognitive decline.

How Was The Study Conducted?

This was a cross-sectional study which involved 100 adults between the ages of 65 and 75. The participants were healthy and showed no evidence of cognitive impairment and they underwent several tests, including MRIs, mental tests and blood work. The researchers studied 139 variables of brain health, including brain metabolism, function, and structure.

ALSO READ: Longevity Diets: What to Eat to Live Past 100

Nutrients The Protect The Brain

Fatty Acids: Vaccenic, gondoic, alpha-linolenic, eicosapentaenoic, eicosadienoic, and lignoceric acids, commonly found in plants, dairy, and oily fish, contribute to neuron maintenance.

Antioxidants and Carotenoids: Cis-lutein, trans-lutein, and zeaxanthin are essential for neutralizing free radicals and protecting the brain from oxidative stress.

Vitamin E: This antioxidant helps safeguard brain cells, with research suggesting its role in preventing dementias like Alzheimer's disease.

Choline: A vital nutrient for the neurotransmitter acetylcholine, which is important for memory and attention.

The Science Behind Mediterranean Diet and Brain Health

Experts affirm that these nutrients (mentioned above) are commonly found in the Mediterranean diet and are known for their neuroprotective properties. The Mediterranean diet has positive effects on brain, and there is enough evidence to prove that too. It is because the fatty acids maintain neurons, while the antioxidants combat oxidative stress, which then preserves brain function.

Choline, which is found in egg yolks are also essential for acetylcholine production, which supports cognitive functions such as memory and focus. There are certain nutrients which one can find in egg yolks that reduce oxidative stress and inflammation. Further, they also support cell membrane integrity and improve brain blood flow, which in turn enhances neuroplasticity. These are all crucial for healthy aging.

ALSO READ: What Is The Green Mediterranean Diet?

There are also additional benefits too, for instance, omega-3 fatty acids also reduce heart disease risks, whereas antioxidants like vitamin C and E also boost immune system. The Mediterranean diet in all, also manages arthritis and metabolic syndrome.

Ingredients You Can In Your Diet To Boost Brain Health

Fatty Fish: These include Salmon, mackerel, sardines, and trout are rich in omega-3s.

Leafy Greens: These include spinach, kale, broccoli. These are packed with carotenoids like lutein and zeaxanthin.

Nuts and Seeds: They are rich in alpha-linolenic acid (ALA) and vitamin E. You can include almonds, sunflower seeds, and flaxseeds in your diet.

Eggs and Liver: They are a great source of choline, which can be helpful for brain function.

Colorful vegetables and fruits: Peppers, tomatoes, and oranges are rich in anti-oxidants and vitamin C.

Love your daily coffee but worried about bone health as you age? A new study suggests that drinking more than five cups of coffee a day may be linked to lower bone density in older women, while tea drinkers showed slightly higher hip bone density.

The findings, published in Nutrients, offer a closer look at how two of the world’s most popular beverages may be associated with bone health in older women. Importantly, moderate coffee consumption was not associated with overall harm to bone health.

“While calcium and vitamin D remain cornerstones of bone health, what’s in your cup could play a role too. For older women, enjoying a daily cup of tea may be more than a comforting ritual; it could be a small step toward stronger bones,” said Enwu Liu, Adjunct Associate Professor from the College of Medicine and Public Health at Flinders University.

More Than 5 Cups Of Coffee Linked To Lower Bone Density

Also read: Coffee Is Good For The Heart, But Your Choice Of Brew May Raise Bad Cholesterol: American Heart Association

Researchers at Flinders University in Australia analyzed data from 9,704 women aged 65 and older who were followed for about 10 years.

The researchers repeatedly assessed how much coffee and tea the women consumed and measured bone mineral density (BMD) at the total hip and femoral neck — areas closely linked to fracture risk.

They found that moderate coffee consumption — around two to three cups a day — was not associated with overall harm to bone health.

However, drinking more than five cups of coffee a day was linked to lower BMD, suggesting that very high coffee intake may have negative effects on bone health. The association was also stronger among women with higher lifetime alcohol consumption.

Importantly, the researchers found no significant overall association between coffee consumption and BMD. The potential link with lower BMD emerged when they examined very high coffee intake.

Tea Drinkers Had Slightly Higher Hip Bone Density

Tea showed a different pattern. Women who drank tea had slightly higher total hip BMD than women who did not drink tea. The difference was small but statistically significant.

The researchers also found that the association between tea consumption and higher bone density was more pronounced among women with obesity.

Read More: Can Drinking Coffee Make You Leaner, Healthier? Study Decodes The Link

Ryan Yan Liu, co-author of the study, explained that compounds called catechins, which are abundant in tea, may promote bone formation and slow bone breakdown.

Caffeine found in coffee, meanwhile, has been shown in laboratory studies to interfere with calcium absorption and bone metabolism. However, the researchers noted that these effects are small and can be offset by adding milk.

Should You Give Up Coffee?

Not necessarily. The researchers stressed that the differences observed were modest and do not justify dramatic changes to an individual’s daily habits.

“While moderate coffee drinking appears safe, very high consumption may not be ideal, especially for women who drink alcohol,” said Liu.

The findings also do not prove that coffee causes bone loss or that tea prevents osteoporosis. The study found associations between beverage consumption and bone mineral density in older women.

For women concerned about bone health, the researchers emphasized that calcium and vitamin D remain important.

The study suggests that what you drink may also play a small role — but there is no need to swap coffee for gallons of tea.

Vitamin D, better known as the sunshine vitamin, is not only important for bone health but also plays a role in maintaining muscle and cardiovascular function.

An animal study led by researchers at the ICMR-National Institute of Nutrition (ICMR-NIN), Hyderabad, found that Vitamin D3 was more effective than Vitamin D2 in maintaining and restoring skeletal muscle and heart function in male rats.

Vitamin D2 Vs Vitamin D3: What’s The Difference?

Vitamin D occurs naturally in two forms: Vitamin D3 (cholecalciferol) and Vitamin D2 (ergocalciferol). Vitamin D3 is produced in the skin following exposure to sunlight and is also obtained from animal-based foods such as eggs, fish and organ meats, as well as supplements.

Vitamin D2 is derived from wild, cultivated or sun-dried mushrooms, UV-B-irradiated yeast, plant-based sources and some dietary supplements.

Amid increasing vitamin D deficiency, both forms are used for food fortification. However, D2 is preferred in some countries because of widespread vegetarianism and among people following strict vegan diets.

Also read: India Gets Its First Plant-Based Vitamin D3: What You Need to Know

How Was The Study Conducted?

Researchers compared the effects of Vitamin D2 and Vitamin D3 on skeletal muscle and cardiac parameters in rats during both maintenance and recovery from vitamin D deficiency.

The study used weaning male Sprague-Dawley rats, which were given diets containing Vitamin D2, Vitamin D3, a combination of both forms, or a vitamin D-deficient diet.

Researchers assessed several parameters, including body composition, muscle strength, skeletal muscle structure and metabolism, along with markers associated with cardiac function.

Vitamin D3 Showed Greater Benefits

The study found that Vitamin D3 produced greater improvements in muscle mass, muscle fibre size and grip strength compared with Vitamin D2.

Vitamin D3 also showed stronger effects on markers associated with muscle development and energy metabolism.

Similar differences were observed in cardiac parameters, with Vitamin D3 showing greater effects on markers related to cardiac contractility and metabolism.

The differences between the two forms were particularly pronounced during the recovery phase following vitamin D deficiency, according to the researchers.

Dr Ayesha Ismail, Scientist F at ICMR-NIN and corresponding author of the study, said both forms were effective in improving calcium-related parameters, but Vitamin D2 was less effective on several measures linked to muscle and heart structure and energy metabolism.

“Although both forms of vitamin D were effective in improving calcium-related parameters, vitamin D2 was less effective than vitamin D3 in several parameters related to muscle and heart structure and energy metabolism,” Ismail said, ANI news agency reported.

Read More: Sweetener In Sugar-Free Gum Linked To 57% Higher Heart Attack And Stroke Risk: What Is Xylitol?

Can The Findings Be Applied To Humans?

Dr Bharati Kulkarni, Director, ICMR-NIN, stressed that further research would be required before drawing conclusions about the effects of the two forms of vitamin D in humans.

“Further studies are needed to establish the effects of the two forms of vitamin D on skeletal and extra-skeletal functions and their implications for supplementation and fortification programs,” she told ANI.

The findings suggest that Vitamin D3 may have stronger effects than Vitamin D2 on skeletal muscle and cardiac function. However, the study was conducted in male rats, and whether the same effects occur in humans remains to be established.

The researchers said the study provides additional evidence of differences between Vitamin D2 and D3 beyond their established roles in calcium regulation and bone health.

Researchers have developed a form of Spirulina containing biologically active vitamin B12 at levels comparable to beef. By carefully controlling the light used during cultivation, they overcame a key limitation of conventional Spirulina, which mainly contains a form of B12 that the human body cannot use.

The carbon-neutral system could offer a more sustainable, vegan-friendly source of vitamin B12, particularly for people who avoid meat and dairy.

A New Source Of Active Vitamin B12

Researchers from Reichman University in Israel, along with scientists from Iceland, Denmark and Austria, found a way to grow Spirulina that produces biologically active B12.

Published in Discover Food, the study used biotechnology and controlled light conditions to produce nutrient-rich, carbon-neutral Spirulina biomass. The researchers say this is the first reported production of biologically active B12 in Spirulina.

The cultivated biomass contained 1.64 µg of active B12 per 100 grams, compared with 0.7–1.5 µg per 100 grams in beef.

Spirulina, a blue-green cyanobacterium, is already valued for its protein and nutrient content and can be cultivated with a relatively small environmental footprint.

Why Conventional Spirulina Falls Short

Vitamin B12 is essential for functions including red blood cell formation and normal nervous system function. More than a billion people worldwide are estimated to have low levels of the vitamin.

Although Spirulina has long been promoted as a sustainable food source, conventional varieties largely contain pseudo-vitamin B12. While chemically similar to the vitamin humans need, this form is not bioavailable and cannot be effectively used by the body.

That has limited conventional Spirulina as a reliable alternative to animal-derived sources of B12.

Using Light to Change Spirulina’s Nutrition

The researchers studied a biotechnology platform developed by VAXA Technologies in Iceland. Its key feature is photonic management, which involves precisely adjusting the light environment in which Spirulina grows.

The controlled conditions encouraged the production of biologically active B12 while generating carbon-neutral biomass. The cultivated Spirulina also contained other bioactive compounds associated with antioxidant, anti-inflammatory and immune-related properties.

Potential for Large-Scale Production

The researchers modelled possible large-scale production scenarios. In one scenario, reallocating electricity currently used by heavy industry in Iceland could support the production of 277,950 tonnes of Spirulina biomass annually.

They estimate this could contain about 4,555 grams of active B12—enough, based on their calculations, to provide the recommended dietary allowance for more than 13.8 million children aged 1–3.

More ambitious scenarios could potentially meet the B12 RDA for more than 26.5 million children aged 1–3 and more than 50 million infants aged 0–6 months.

These figures are projections rather than current production levels.

A Sustainable B12 Alternative

The findings suggest that photosynthetically controlled Spirulina could become a sustainable, vegan-friendly source of active vitamin B12, potentially reducing some reliance on animal-based foods.

However, further research, validation and large-scale production are needed to determine whether the technology can become a practical dietary solution for vitamin B12 deficiency.