Nourishing Someone You Love: A Caregiver’s Guide to Nutrition when Appetite Fades

Written by: Adrienne Agueci, RD, MPH; Healthcare Manager at Sperri 

There's a particular feeling of helplessness that comes with watching someone you love push their plate away. Again. You've tried their favourite foods. You've adjusted portion sizes. You've Googled more than you'd like to admit. And still - they're eating less, and you're worrying more.  

If this is where you are right now, the first thing to know is: this is not your fault, and you are not failing them.  

Loss of appetite is one of the most common experiences in aging, illness, and recovery. It's driven by biology - changes in metabolism, medications, treatment side effects, even shifts in how the body processes taste and smell. It's not stubbornness, and it's rarely a choice. 

This guide is for you: the person doing the caring. It won't ask you to become a nutritionist or transform your kitchen. It will give you a clear understanding of what's happening, what actually matters nutritionally, and a few practical tools that can make tomorrow a little easier.  

When Someone You Love Stops Eating: What’s Happening and Why 

Appetite is regulated by a complex system involving hormones, the brain, the gut, and even the senses. Illness, aging, and medical treatment can disrupt this system at one or multiple points simultaneously.  

Below are some common causes of reduced appetite, but causes may go beyond this list:

Aging: Metabolism slows. Taste and smell dull. The stomach empties more slowly, creating a feeling of fullness even after small amounts. 

Cancer treatment: Chemotherapy and radiation can cause nausea, mouth sores, taste changes, and fatigue - all of which reduce the desire and ability to eat. Many cancer patients report that foods they once loved now taste metallic or overly sweet. 

Chronic illness: Conditions like COPD, heart failure, kidney disease, and certain autoimmune disorders often reduce appetite as a secondary effect of the disease itself or its treatment. 

Post-surgical recovery: Anesthesia, pain medications, reduced mobility, and the body's healing demands can all suppress hunger. 

Medications: Many common medications, including certain antidepressants, antibiotics, and opioids, list appetite suppression as a side effect - often as a secondary result of nausea, altered taste, or GI upset rather than a direct effect on appetite itself. 

The key thing to understand is that appetite loss is a symptom, not a behaviour. Recognizing this can ease the tension that sometimes builds around mealtimes — the gentle urging that becomes insisting that becomes a source of stress for everyone. 

What Actually Matters Nutritionally Right Now 

There are three nutritional priorities I want to highlight as especially important during times of reduced appetite: calories, protein and micronutrients.  

Priority 1: Calories first – energy is survival  

When intake is significantly reduced, the body's first need is energy. Without enough calories, the body begins breaking down muscle for fuel - accelerating weakness and slowing recovery. The good news is that our bodies are flexible - they can draw energy from carbohydrates, fats, and protein. That means getting enough calories in, from any source, helps spare muscle from being broken down for fuel. This is not the time to worry about low-calorie or "light" options. Nutrient-dense, calorie-rich foods and drinks are the goal. For many people, a 330mL liquid meal replacement can provide a meaningful caloric foundation on days when solid food feels impossible. 

Priority 2: Protein to protect 

Muscle loss during illness, aging, or treatment can happen quickly — and it's often difficult to reverse. Protein is the primary nutrient for maintaining muscle tissue, so aim to offer it at every eating occasion. When using plant-based sources, vary them where you can - seeds at lunch, beans at dinner, for example. Even better: offer two sources together at the same meal, since different plant sources tend to offer different proteins. Sperri's pea and hemp protein blend is one example of this - pairing two sources that round each other out to form a high-quality, complete protein.  

Priority 3: Micronutrients to fill the gaps 

When someone is eating a fraction of their normal diet, certain vitamin and mineral deficiencies can develop quickly - iron, calcium, vitamin D, B12, and zinc are common gaps for most people. A complete meal replacement (one that meets Health Canada's regulatory definition) provides a baseline of essential micronutrients in every serving, which differs from a protein shake, which typically provides protein and little else.  

What to let go of (for now) 

If you've been spending energy on superfoods, sugar counting, or the latest wellness trends you've seen online — you have permission to set all of that aside. Those things may have a place in normal circumstances. Right now, it should be simpler than the internet makes it sound: get calories in, get protein in, cover the micronutrient basics. If your loved one will drink a meal replacement, eat a piece of toast with peanut butter, or finish half a bowl of soup — that counts. There is no "wrong" food when the alternative is no food at all. Save your energy for the things that matter most right now and let the rest go. 

What to Look for in a Meal Replacement (and What to Avoid) 

Meal replacements can be a really great way to help your loved one achieve all three goals: calories, protein, and micronutrients. Here’s what matters when choosing a meal replacement for your loved one who is experiencing low appetite:

Complete nutrition, not just protein. A protein shake is not a meal replacement. A true meal replacement (as defined by Health Canada) provides calories, protein, fat, carbohydrates, and a full spectrum of vitamins and minerals. If it doesn't meet that standard, it's a supplement - and it's not providing complete nutrition. Meal replacements can be easily identified at the back of the package, where the nutrition information is more extensive, and labelled “Nutrition Information” 

Small volume, high density. If someone can only drink a couple hundred milliliters at a time, every milliliter needs to count. Look for products that deliver meaningful nutrition in a size that can be managed by your loved one.  

Mild flavour. Illness and aging often heighten sensitivity to sweetness. Many conventional meal replacements (Ensure, Boost) are formulated to be quite sweet. For someone whose taste has changed, a milder flavour is more likely to be tolerated, finished, and enjoyed.  

Gentle on the stomach. Many people with reduced appetite also have digestive sensitivity. If your loved one is experiencing nausea, bloating or diarrhea, it may be helpful to avoid products with common gut irritants: dairy, soy, artificial sweeteners, sugar alcohols.  

Allergen safety. If your loved one has food sensitivities (common in older adults and people on multiple medications), an allergen-free option eliminates one more variable to worry about. 

Ingredients you recognize. When you're responsible for someone's nutrition, the label matters. You should be able to read the ingredients and understand what's in the bottle. 

Sperri Original is a meal replacement designed around these exact criteria: complete (Health Canada compliant), 330mL bottle, mild natural flavour, organic plant-based ingredients, free of top 9 allergens, no artificial sweeteners or preservatives, 330 calories 16g plant protein, DHA (omega-3), and a full vitamin/mineral profile.  

While it may not be right for every condition or individual situation, Sperri Control (higher protein, lower sugar) may be an option worth discussing with your loved one and their care team.  

Many caregivers have discovered Sperri after looking for an alternative to Ensure or Boost. Sperri is available across Canada in every major retailer, or for purchase on sperri.ca delivered straight to your home. 

Practical Tips for Introducing a Meal Replacement to Someone Who Isn’t Eating 

Trying and accepting a meal replacement might be challenging for your loved one. Here are some tips to supporting this new lifestyle addition: 

Don’t announce it as a “meal replacement”  Labelling food in this way can be discouraging or difficult for your loved one. I recommend calling it “a nutrition drink”, “something to sip on” or simply by the brand name (e.g. drink a Sperri). Let it be casual, not clinical.

Serve it cold and in a glass.  Many people associate meal replacement drinks with hospital stays, especially if this is where they were first introduced. Pouring it into a nice glass can remove that association. Serving it cold tends to improve taste and reduce any lingering aftertaste.

Start with half a bottle.  A full 330mL may feel overwhelming to someone with little appetite. Pour half a bottle and present it alongside something familiar – a few crackers, a piece of toast, a cup of tea. Let the goal be to get some nutrition, not necessarily a full serving on day one. 

Make it part of a routine, not a negotiation.  Try to find a time of day when your loved one is most receptive (mid-morning or early afternoon, perhaps), and try to make the drink a quiet, consistent part of that moment. 

Try different flavours and temperatures.  Taste preferences change during illness and aging – try not to feel discouraged if what worked last week isn’t working this week – that is a normal complexity. You can even try switching up the flavours or beverage temperatures – remember that experimenting isn’t failure.

Don’t make food a battlefield.  When a loved one won’t eat, it’s natural to push harder – but pressure around food often backfires, creating anxiety that further suppresses appetite. The best thing to do is offer, not insist. Your job is to make nutrition available and accessible as best you can. Their body will take what it can. 

Focus on what works, not what doesn’t.  Keep a simple log: what your loved one ate or drank today, what time, and how they seemed to feel. Over a week, patterns may emerge. Share this log with their healthcare team for optimal collaboration. 

When to Talk to a Dietitian or Healthcare Provider 

Caring for someone who isn't eating is one of the hardest parts of caregiving - because food is love, is at the center of so many cultures, and watching someone refuse it can feel like rejection. It isn't. And you are doing more than you think. The fact that you're here, reading this, looking for answers - that’s not a sign of failure. It's a sign of love and devotion. You don't need to get it perfect. You just need a few good tools, a little knowledge, and the willingness to keep showing up.  That's exactly what you're already doing.  

Sources for Additional Reading