Introduction

Healthy ageing is about more than avoiding illness; it’s about thriving. Psychologist Martin Seligman’s PERMA model, developed as part of the field of positive psychology, offers a useful lens for what a genuinely good later life looks like. PERMA stands for Positive emotion, Engagement, Relationships, Meaning, and Accomplishment — five pillars that, together, describe human flourishing. What’s often overlooked is how closely nutrition is woven into each of these pillars. The food choices older adults make don’t just affect their waistlines or lab results; they shape mood, energy, muscle strength, and the capacity to stay connected and engaged with life.

Positive Emotion: Nutrition and Mood

Positive emotion is the most immediately recognizable part of PERMA — contentment, joy, hope, and everyday pleasure. Diet plays a real role here. Stable blood sugar, adequate omega-3 intake, and sufficient B vitamins are all linked to steadier mood and lower rates of depressive symptoms in ageing adults. Skipping meals or relying heavily on ultra-processed foods can contribute to energy crashes and irritability, while regular meals built around whole foods, healthy fats, and fibre help keep mood on a more even keel. For older adults, even small, consistent nutritional habits — a good breakfast, adequate hydration, regular mealtimes- can meaningfully support day-to-day emotional wellbeing.

Engagement: Fuelling Focus and Flow

Engagement is about being absorbed in activities that use our skills and attention — a hobby, a puzzle, gardening, dancing. Cognitive engagement in particular depends on steady fuel: the brain is metabolically demanding, and nutrient deficiencies (especially in B12, iron, and omega-3s) are associated with brain fog and reduced concentration in older adults. Good hydration alone has a measurable effect on alertness and reaction time. Nutrition doesn’t just keep the body capable of engaging in activities — it keeps the mind sharp enough to enjoy them.

Relationships: Food as a Social Connector

Meals have always been social. Sharing food with family, friends, or a community group combats one of the biggest risks to healthy ageing: isolation. Cooking for others, eating at a shared table, or joining a community meal program isn’t just good for nutrition intake — it’s protective for mental health. Encouraging older adults to see meals as social occasions, rather than solitary refuelling stops, supports the Relationships pillar directly.

Meaning: Nutrition as Self-Care and Purpose

For many older adults, taking care of their body through food becomes an expression of purpose — a way of saying “I still matter, and I’m worth looking after.” Meal planning, learning about nutrition, or maintaining dietary traditions passed down through family can give a genuine sense of meaning, particularly for those navigating retirement or the loss of other life roles.

Accomplishment: Strength, Independence, and Nutrition

This is where the connection between nutrition and healthy ageing becomes most concrete. Maintaining muscle mass and strength — technically known as preventing sarcopenia — is one of the clearest predictors of independence in later life. Adequate protein intake (research generally points to older adults needing somewhat more protein per kilogram of body weight than younger adults), combined with resistance exercise, is one of the most effective ways to preserve strength, balance, and the ability to keep doing the things that provide a sense of accomplishment — climbing stairs, carrying groceries, playing with grandchildren.

Micronutrients matter here too. Vitamin D and calcium support bone density and reduce fracture risk; vitamin C and zinc support wound healing and immune resilience; adequate fibre and fluid intake support digestive comfort, which quietly affects quality of life more than people expect.

Where Supplements Fit — and Where the Evidence Is Thinner

Whole foods should always be the foundation, but supplements can play a supporting role, particularly where dietary intake or absorption is limited (common issues in older age include reduced stomach acid, which affects B12 absorption, and reduced sun exposure, which affects vitamin D). It’s worth being clear-eyed, though, about which supplement claims are well supported and which are overstated.

Apple cider vinegar (ACV) is a good example. Liquid ACV has been studied in a number of clinical trials, and the most consistent, credible finding is a modest one: taken with a carbohydrate-heavy meal, vinegar can blunt the post-meal blood sugar spike and slightly increase feelings of fullness, likely by slowing stomach emptying. Reviews of the research also note possible modest effects on cholesterol, though evidence there is less consistent, and claims about significant weight loss are considerably weaker than the marketing around ACV products suggests.

Where this gets more complicated is with apple cider vinegar gummies specifically. Most gummy products contain a fraction of the acetic acid used in clinical studies on liquid vinegar — typically a few hundred milligrams per gummy, compared with the 15–30 mL of liquid vinegar used in research. Because of that dosage gap, there is very little direct research on gummies themselves, and no strong basis for assuming they deliver the same effects as the liquid form studied in trials. Some gummies also contain added sugar, which can work against the very blood-sugar benefit being marketed. For older adults interested in trying ACV, a realistic takeaway is: it’s a low-risk habit with modest, mostly meal-timing-related benefits — not a substitute for a balanced diet, medication, or an evidence-based strength and nutrition plan, and gummies in particular should be chosen (or skipped) with clear expectations about the limited dosing they provide.

Bringing It Together

Healthy ageing isn’t a single metric — it’s the sum of feeling good, staying engaged, remaining connected, finding meaning, and being able to do the things that matter. Nutrition touches every one of those pillars, sometimes directly (protein and muscle strength) and sometimes indirectly (a shared meal and a sense of connection). The most reliable nutritional strategy for ageing well remains the least glamorous one: a varied, whole-food diet with adequate protein, colourful produce, Gut Health fats, and good hydration — with supplements used thoughtfully to fill specific, identified gaps rather than as a shortcut around the basics.