How To Gain Weight Back After Being Sick In Healthy & Safe Ways 2024?

Jennifer Olejarz

Updated on - Written by
Medically reviewed by Melissa Mitri, MS, RD

how to gain weight back after being sick

Getting ill can cause us to lose more than just weight. Diseases and chronic illnesses[1] can easily cause you to feel down, not yourself. 

The stress and frustration of waiting to feel better, losing time with friends, and the loss of energy to do the activities you love can drain you. Maybe you can’t work, have medical bills to pay, or you feel the pressure to earn money now. 

No matter what happens, your road to recovery can get a jump start with proper nutrition. Eating more will help strengthen your body and mind, making it easier to move on. 

This article will teach you how to gain weight back after being sick and reach a healthy weight, helping you not to recover just your figure but your physical and mental energy levels, too. 

How To Gain Weight After Being Sick?

For most people, starting slow and letting go of the idea that you have to get well quickly can help ease some of the pressure to return to normal life as soon as possible. 

Healing takes time, and the more compassion and patience[2] you offer yourself, the more likely you will have an easier time. Self-compassion is also one of the most important mindsets you can develop to reduce symptoms of depression and anxiety[3] from being sick. 

Having more self-compassion can also reduce stress hormones and make you less likely to get sick again. 

Depending on what you are suffering from, you can start by trying to add around 500 extra calories to your day. While this might sound like a lot, it’s not too hard to achieve through healthy high-calorie foods. 

Think raw nuts, seeds, and dried fruit — a handful of trail mix can easily add 200 to 500 calories with 20 grams of fat or more. For example, macadamia nuts and raw peanuts are some of the highest-calorie nuts and legumes available. 

Keeping a bowl of these around to snack on throughout the day can easily pile on more calories. 

Suppose you suffer from any stomach or gut health issues like malabsorption, irritable bowel syndrome, or side effects from chemo. In that case, it’s best to speak to a registered dietitian about foods that will specifically work for you. 

They’ll be able to give you detailed recommendations to make your food tastier and life easier. Be sure to ask your doctor about any food-related requirements due to the illness or medications. 

The Risks Of Using Calorie-Counting Apps

Many people find it useful to use calorie-counting apps when first starting to change their eating behaviors. It definitely has its advantages and can be very helpful for allowing you to see just how much, or little; you eat in a day. 

It can also help you to notice what external factors, such as emotional stressors and busy work schedules, can lead to you eating more or less in a day. This can, in turn, encourages you to keep extra snacks with you or plan meals ahead of time too. 

However, it’s also straightforward to get sucked into tracking every morsel of food and become obsessive about how many calories you eat in a day. Humans are wired to go after a goal, which can be a wonderful thing. But in the case of calorie counting, it can lead to disordered eating behaviors.[4]

Unfortunately, many people don’t even realize they have disordered eating patterns,[5] so these are some signs that professional guidance and support for your weight gain journey is necessary:

  • Obsessively thinking about what you eat or how you look.
  • Feeling excessive guilt and regret after eating certain foods. 
  • Binging — eating large amounts in short periods of time or purging. 
  • Using food or exercise as rewards or punishments. 
  • Hiding how much you eat from others. 
  • Stress and emotional eating. 

If you have a history of yo-yo dieting or disordered eating, calorie counting may not be for you. 

5 Tips To Gain Weight After Illness

It can be easy to lose weight and become malnourished while you’re sick. You might have lost your appetite or have had a hard time keeping food down. 

If you’re getting better but noticed you’re underweight, adding more nutrients can help you restore your energy levels and get back to your usual routine more easily. 

An easy measure to determine if you’re underweight is by using the BMI scale – less than 18.5 is considered underweight.

Here are some simple science-backed tips[6] for healthy weight gain: 

Snack On Healthy High-Calorie Foods

If you still don’t have much of an appetite, snacking throughout the day on energy-dense foods is going to be a game changer. 

Whether you’re at home or the office, prepare and leave out bowls of snacks on your desk and throughout the house as a friendly reminder to nibble away whenever you see them. 

Here are some great foods to keep around to make gaining weight easy:

  • Raw nuts and seeds.
  • Dark chocolate.
  • Dried fruit.
  • Homemade muffins or banana bread. 
  • Nut butter — great on bananas, whole grain toast, muffins, or crackers.
  • Regular fat dairy-free yogurts and add fruit, granola, and honey.
  • Hummus with whole grain toast, crackers, or vegetables.
  • All-natural protein bars.
  • Hard-boiled eggs.

Keeping these nutritious favorites in easy-to-reach places in your kitchen will remind you to eat them regularly.

Eat Regular Nutrient-Dense Meals

how to gain weight back after being sick

It can be hard to get back to a regular eating schedule after eating less and feeling low on energy. To make it easier on yourself, see if you can buy healthy ready-made meals from the grocery store or a meal plan service.

Otherwise, buy frozen meats, fish, and vegetables that you can easily heat up. Canned foods, like tuna or legumes, can also easily be made into a sandwich for a quick lunch. Here are some great options to include in your meals: 

  • Protein like fatty fish, chicken, or eggs. 
  • Fiber-rich starchy vegetables like potatoes, squash, corn, and legumes. 
  • Whole grains like oats, quinoa, and bread. 
  • Lentil or chickpea pasta that’s ready in less than five minutes. 

Pro tip: set alarms on your phone to remind yourself to eat or snack throughout the day. They don’t have to be large meals, just something to ease your stomach and mind into eating regular meals again. 

Use Healthy Fats For Cooking, Dipping, And Spreading

how to gain weight back after being sick

Don’t be afraid to douse your pan or vegetables with a healthy fat like olive or avocado oil — they are incredibly heart-healthy and full of antioxidants. Here are ways to add more to your diet: 

  • Use double the amount of recommended oil when cooking a recipe.  
  • Drizzle extra oil on your raw or cooked vegetables. 
  • Spread avocado mayo or sundried tomatoes in olive oil on your sandwiches.  
  • Add coconut cream to your chicken or pasta sauces. 

Including these healthy fats in your meals easily bumps up the calorie content without having to increase the volume of your food.

Add Toppings To Your Meals

how to gain weight back after being sick

An easy way to sneak in more nutrition is to make additions to your meals and snacks using ingredients such as: 

  • Raw nuts, seeds, and dried fruit. 
  • Full fat dairy-free sour cream, yogurt, or cheese.
  • Hard-boiled eggs.
  • Nutritional yeast. 
  • Avocado slices. 
  • Sundried tomatoes in olive oil.
  • Honey.

These simple additions taste great and are an effective calorie bump in a small portion.

Make Smoothies Your Friend

how to gain weight back after being sick

Gaining weight is easier if you drink your calories. Plus, you’ll gain a ton of vitamins and minerals to help you feel better. The internet has many healthy smoothie recipes, such as:

  • Choco-banana: coconut milk, frozen bananas, nut butter, cocoa powder, cinnamon, and chocolate protein powder.
  • Blueberry banana: nut milk, frozen blueberries, bananas, almond butter, and vanilla protein powder. 
  • Red chia: mix of red berries, a spoonful of chia seeds, full-fat coconut yogurt, and vanilla protein powder. 

If you’re having trouble adding more solid food to your day, adding a daily smoothie can make it easier to get in those extra 500 calories.

Healthy Foods To Help You Gain Weight

Here’s a list of some of the healthiest energy and nutrient-rich foods to help you gain the weight back and feel yourself again:

Carbohydrates

how to gain weight back after being sick
  • Starchy vegetables.
    • Potatoes.
    • Squash.
    • Green peas.
    • Corn.
    • Beets.
    • Turnips.
    • Carrots. 
  • Legumes.
  • Whole grain bread and cereals.
  • Legume-based or regular pasta. 
  • Wild and whole grain rice. 
  • Dried or fresh fruit.

Protein

how to gain weight back after being sick
  • Fatty fish and seafood.
    • Salmon.
    • Sardines.
    • Anchovies.
    • Mussels. 
    • Herring.
    • Tuna. 
  • Dark chicken meat.
  • Eggs.
  • Protein powders and bars.

Fats

how to gain weight back after being sick
  • Olive, avocado, and coconut oil.
  • Ghee.
  • Avocados.
  • Nuts and seeds.
  • Dairy-free full-fat yogurt.
  • Coconut cream or milk.
  • Dark chocolate.

All these foods are both nutrient-dense and calorie-dense, so with every extra calorie you’re taking in, you’re getting a big punch of nutrients simultaneously.

Summary

Working your way back to health after being sick takes time, patience, and plenty of self-compassion. It’s important to be gentle with yourself as you slowly start to build your energy levels back up. 

Snacking on energy-dense trail mix, setting alarm reminders to eat regularly, and making rich protein shakes can make the healing process easier on yourself. 

Finally, don’t expect weight gain to be a linear process. You might still have days where you don’t feel well or have no appetite or desire to cook, and that’s ok. 

Your best bet is to get online deliveries to keep your home stocked and full of ready-to-eat nutritious foods, like nuts, seeds, yogurts, fruit, and frozen protein and vegetables for a quick meal. Overall, keep your focus on what gives you energy and makes you feel good, both mentally and physically.


+ 6 sources

Health Canal avoids using tertiary references. We have strict sourcing guidelines and rely on peer-reviewed studies, academic researches from medical associations and institutions. To ensure the accuracy of articles in Health Canal, you can read more about the editorial process here

  1. Rosenblat, J.D., Kurdyak, P., Cosci, F., Berk, M., Maes, M., Brunoni, A.R., Li, M., Rodin, G., McIntyre, R.S. and Carvalho, A.F. (2019). Depression in the medically ill. Australian & New Zealand Journal of Psychiatry, [online] 54(4), pp.346–366. doi:10.1177/0004867419888576.
  2. Mantzios, M. and Egan, H.H. (2017). On the Role of Self-compassion and Self-kindness in Weight Regulation and Health Behavior Change. Frontiers in Psychology, [online] 8. doi:10.3389/fpsyg.2017.00229.
  3. Frostadottir, A.D. and Dorjee, D. (2019). Effects of Mindfulness Based Cognitive Therapy (MBCT) and Compassion Focused Therapy (CFT) on Symptom Change, Mindfulness, Self-Compassion, and Rumination in Clients With Depression, Anxiety, and Stress. Frontiers in Psychology, [online] 10. doi:10.3389/fpsyg.2019.01099.
  4. Simpson, C.C. and Mazzeo, S.E. (2017). Calorie counting and fitness tracking technology: Associations with eating disorder symptomatology. Eating Behaviors, [online] 26, pp.89–92. doi:10.1016/j.eatbeh.2017.02.002.
  5. NHS Choices (2023). Overview – Eating disorders. [online] Available at: https://www.nhs.uk/mental-health/feelings-symptoms-behaviours/behaviours/eating-disorders/overview/
  6. Mayo Clinic. (2023). Underweight? Healthy tips for adding pounds. [online] Available at: https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/underweight/faq-20058429
Jennifer Olejarz

Medically reviewed by:

Melissa Mitri

Jennifer Olejarz is a Certified Nutritionist and Health Counselor specializing in binge and emotional eating, stress management, and mental health. She has almost a decade's worth of experience in the health and wellness field writing health articles, guides, and books, along with creating health and nutrition courses. She works one-to-one with private clients to build healthier lifestyle habits and end the lifelong battle of food guilt and diet frustrations. She has degrees in both Psychology and Nutrition from Western University, Canada.

Medically reviewed by:

Melissa Mitri

Journal of Physical Education and Sport

Trusted Source

Go to source

SciELO - Scientific Electronic Library Online

Trusted Source

Go to source

African Journals Online

Non-profit Platform for African Journals

Trusted Source
Go to source

Journal of The American Board of Family Medicine

American Board of Family Medicine

Trusted Source
Go to source

Informit

RMIT University Library

Trusted Source
Go to source

European Food Safety Authority

Science, Safe food, Sustainability

Trusted Source
Go to source

OrthoInfo

American Academy of Orthopaedic Surgeons

Trusted Source
Go to source

American Academy of Family Physicians

Strengthen family physicians and the communities they care for

Trusted Source
Go to source

Agricultural Research Service

U.S. Department of Agriculture

Trusted Source
Go to source

The American Journal of Medicine

Official Journal of The Alliance for Academic Internal Medicine

Trusted Source
Go to source

National Institute on Alcohol Abuse and Alcoholism

Database From National Institute Of Health

Trusted Source
Go to source

Lippincott Journals

Subsidiaries of Wolters Kluwer Health, Inc.

Trusted Source
Go to source

National Institute on Aging

Database From National Institute Of Health

Trusted Source
Go to source

Translational Research

The Journal of Laboratory and Clinical Medicine

Trusted Source
Go to source

Cell

An All-science Publisher

Trusted Source
Go to source

Journal of Translational Medicine

BioMed Central

Part of Springer Nature
Go to source

Federal Trade Commission

Protecting America's Consumers

Trusted Source
Go to source

National Human Genome Research Institute

Database From National Institute Of Health

Trusted Source
Go to source

Food Production, Processing and Nutrition

BioMed Central

Part of Springer Nature
Go to source

BMC Gastroenterology

BioMed Central

Part of Springer Nature
Go to source

ACS Publications

A Division of The American Chemical Society

Trusted Source
Go to source

Annual Reviews

Independent, Non-profit Academic Publishing Company

Trusted Source
Go to source

PubChem

National Center for Biotechnology Information

National Library of Medicine
Go to source

PLOS Journals

Nonprofit Publisher of Open-access Journals

Trusted Source
Go to source

Thieme E-books & E-Journals

Peer-reviewed & Open Access Journal

Trusted Source
Go to source

European Journal of Agriculture and Food Sciences

Peer-reviewed International Journal Publishes

Trusted Source
Go to source

Royal Society of Chemistry Publishing Home

Chemical Science Journals, Books and Database

Trusted Source
Go to source

Frontiers

Publisher of Peer-reviewed Articles in Open Acess Journals

Trusted Source
Go to source

De Gruyter

German Scholarly Publishing House

Trusted Source
Go to source

Hindawi

Open Access Research Journals & Papers

Trusted Source
Go to source

Oilseeds and Fats, Crops and Lipids

EDP Sciences

Trusted Source
Go to source

Cambridge Core

Cambridge University Press

Trusted Source
Go to source

FoodData Central

U.S. Department Of Agriculture

Trusted Source
Go to source

Journal of the American Heart Association

Peer-reviewed Open Access Scientific Journal

Trusted Source
Go to source

National Center for Complementary and Integrative Health

Database From National Institute Of Health

U.S Department of Health and Human Services
Go to source

The Americans with Disabilities Act

U.S. Department of Justice Civil Rights Division

Trusted Source
Go to source

Journal of the Academy of Nutrition and Dietetics

Organization of Food and Nutrition Professionals

tr
Go to source

Sage Journals

Database From Sage Publications

Trusted Source
Go to source

National Institute of Drug Abuse

Database From National Institute Of Health

U.S Department of Health and Human Services
Go to source

The ClinMed International Library

A Repository and an Open Access Publisher for Medical Research

Trusted Source
Go to source

The Royal Society Publishing

United Kingdom's National Academy of Sciences

Trusted Source
Go to source

APA PsycNet

Database From American Psychological Association

Trusted Source
Go to source

The Pharma Innovation Journal

Peer-reviewed And Refereed Journal

Trusted Source
Go to source

Asian Journal of Pharmaceutical Research and Development

Peer-reviewed Bimonthly Journal

Trusted Source
Go to source

British Pharmacological Society

Journals - Wiley Online Library

Trusted Source
Go to source

American Psychological Association

Scientific and Professional Organization of Psychologists

Trusted Source
Go to source

AAP Publications

Database From American Academy of Pediatrics

Trusted Source
Go to source

Karger Publishers

Academic Publisher of Scientific and Medical Journals and Books

Trusted Source
Go to source

Cambridge University Press & Assessment

Database From Cambridge University

Trusted Source
Go to source

National Institute of Mental Health

Database From National Institute Of Health

U.S. Department of Health and Human Services
Go to source

MDPI

Publisher of Open Access Journals

Trusted Source
Go to source

Bulletin of the National Research Centre

Part of Springer Nature

Trusted Source
Go to source

The New England Journal of Medicine

Massachusetts Medical Society

Trusted Source
Go to source

Economic Research Service

U.S. DEPARTMENT OF AGRICULTURE

Trusted Source
Go to source

MedlinePlus

Database From National Library of Medicine

U.S Department of Health and Human Services
Go to source

National Institute of Health

An agency of the U.S. Department of Health and Human Services

Trusted Source
Go to source

Trusted Source

Database From National Institute Of Health

U.S Department of Health and Human Services
Go to source

The BMJ

Weekly Peer-reviewed Medical Trade Journal

The British Medical Association
Go to source

The British Psychological Society

The British Psychological Society is a charity registered in England

Database From Wiley Online Library
Go to source

National Heart, Lung, and Blood Institute

Database From National Institute Of Health

U.S Department of Health and Human Services
Go to source

PubMed

Database From National Institute Of Health

U.S National Library of Medicine
Go to source

DailyMed

Database From National Institute Of Health

U.S National Library of Medicine
Go to source

Google Scholar

Go to source

Science.gov: USA.gov for Science

Government Science Portal

Go to source

ResearchGate

Social Network Service For Scientists

Find and share research
Go to source

American Heart Association

To be a rentless force for a world of longer, healthier lives

Go to source

BioMed Central

Research in progress

Go to source

JAMA Network

Home of JAMA and the Specialty Journals of the American Medical Association

Go to source

Springer Link

Database From Springer Nature Switzerland AG

Springer - International Publisher Science, Technology, Medicine
Go to source

ODS

Database from Office of Dietary Supplements

National Institutes of Health
Go to source

Federal Trade Commission

Bureaus of Consumer Protection, Competition and Economics
Go to source

Trusted Source

Database From U.S. Department of Health & Human Services

Governmental Authority
Go to source

Oxford Academic Journals

Oxford University Press

Trusted Source
Go to source

Taylor & Francis Online

Peer-reviewed Journals

Academic Publishing Division of Informa PLC
Go to source

WHO

Database from World Health Organization

Go to source

Journal of Neurology

Peer-reviewed Medical Journal

American Academy of Neurology Journal
Go to source

ScienceDirect

Bibliographic Database of Scientific and Medical Publications

Dutch publisher Elsevier
Go to source

Wiley Online Library

American Multinational Publishing Company

Trusted Source
Go to source

Centers for Disease Control and Prevention

U.S. National Public Health Agency

U.S Department of Health and Human Services
Go to source

Trusted Source

Database from U.S. National Library of Medicine

U.S. Federal Government
Go to source

U.S. Food & Drug Administration

Federal Agency

U.S Department of Health and Human Services
Go to source

PubMed Central

Database From National Institute Of Health

U.S National Library of Medicine
Go to source
Feedback

Help us rate this article

Thank you for your feedback

Keep in touch to see our improvement