Probiotics vs. Plant Protein: Best Options for Hardgainers - Nutrition

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Muscle Gain Issues (Probiotics vs. Dairy/Plant Protein)


Hello Dr.
Tsai, my body type is one that does not gain weight easily, with a BMI of only 17.1.
I also have gastrointestinal issues and tend to experience diarrhea, so I cannot rely on consuming large amounts of meat to gain weight.
However, I do eat three meals a day (and they are proper meal portions, not just snacks), and I do not exercise much (so my calorie expenditure is low).
I have undergone both gastroscopy and colonoscopy, and both were normal with no abnormalities, so I suspect it may be related to my body type.

I have read some articles suggesting that poor gastrointestinal absorption can be improved by taking probiotics to aid digestion and absorption, but it seems that probiotics require a long time (over three months) to show improvement.
Therefore, I am considering using high-protein supplements to see if I can quickly gain weight (for example, within a month).
However, I am sensitive to dairy products and tend to experience diarrhea, so I may lean towards plant-based protein.

I would like to ask for your expert opinion: should I focus on improving my gastrointestinal health first, or can I start supplementing with plant-based protein directly? Thank you.

Niming, 30~39 year old female. Ask Date: 2022/09/09

Dr. Cai Xiuwen reply Nutrition


Hello, if your weight issue has been determined to be a metabolic problem by a physician, you can try to increase your weight by choosing foods with higher nutritional density, which means they contain more calories per unit volume.
For example, foods like avocados, corn chowder, and pumpkin soup have a higher caloric density.
As for plant protein supplementation, I don't have any specific recommendations, but weight gain primarily depends on caloric intake; it’s not enough to just focus on high protein.
You should also ensure that your caloric intake is sufficient and that you are consuming a variety of micronutrients such as vitamins and minerals, which are essential for metabolic processes in the body.
Therefore, I still recommend a diverse intake of various foods to supplement calories, protein, vitamins, and minerals.
Wishing you peace and health.

Reply Date: 2022/09/09

More Info


When it comes to gaining weight, especially for individuals with a high metabolism or those who struggle to gain weight (often referred to as "hardgainers"), the choice of protein sources and digestive health is crucial. In your case, where you have a low BMI of 17.1 and experience gastrointestinal issues such as diarrhea, it is essential to approach your nutrition thoughtfully.


Probiotics and Digestive Health
Probiotics can indeed play a significant role in improving gut health. They are beneficial bacteria that help maintain the natural balance of organisms (microflora) in the intestines. For someone like you, who experiences digestive issues, incorporating probiotics could help enhance your gut flora, potentially improving digestion and nutrient absorption over time. However, as you mentioned, the benefits of probiotics often take time to manifest, typically requiring consistent intake over several weeks to months.

If you decide to incorporate probiotics, consider options such as fermented foods (like yogurt, kefir, sauerkraut, or kimchi) if you can tolerate them, or a high-quality probiotic supplement. Look for strains like Lactobacillus and Bifidobacterium, which have been shown to support digestive health.


Plant Protein as a Weight Gain Strategy
Given your sensitivity to dairy products, plant-based proteins can be an excellent alternative. They are generally easier to digest for those with lactose intolerance or dairy sensitivities. Options include:
- Pea Protein: Rich in essential amino acids and easily digestible.

- Brown Rice Protein: A good source of protein that can be combined with other plant proteins to create a complete amino acid profile.

- Hemp Protein: Contains omega-3 fatty acids and is also a good source of fiber.

- Soy Protein: A complete protein source, but be mindful of any soy sensitivities.

When selecting a plant protein powder, look for products that are low in additives and sugars. You can mix these protein powders with smoothies, which can also include fruits and vegetables, to increase calorie intake without feeling overly full.


Combining Probiotics and Plant Protein
You can certainly combine probiotics with plant protein. In fact, some protein powders even contain added probiotics, which can be beneficial for gut health. Just ensure that you start with small amounts of both to see how your body reacts, especially since you have a history of digestive issues.


Nutritional Strategies for Weight Gain
1. Increase Caloric Intake: Focus on calorie-dense foods. Incorporate healthy fats such as avocados, nuts, seeds, and olive oil into your meals. These foods provide more calories without requiring you to eat large volumes.

2. Frequent Meals: Instead of three large meals, consider eating smaller, more frequent meals throughout the day. This can help you consume more calories without feeling overly full.

3. Smoothies and Shakes: These can be an excellent way to pack in calories and protein without the bulk. You can blend plant protein with fruits, nut butter, and even oats for a nutritious, calorie-rich drink.

4. Monitor Your Progress: Keep track of your weight and how your body responds to dietary changes. If you find that certain foods exacerbate your digestive issues, adjust accordingly.

5. Consult a Professional: Given your unique situation, working with a registered dietitian or nutritionist who specializes in gastrointestinal health and weight gain can provide personalized guidance tailored to your needs.

In conclusion, while improving your gut health with probiotics is beneficial, you can also start incorporating plant-based proteins to help with weight gain. Focus on a balanced approach that includes calorie-dense foods and consider consulting with a healthcare professional to optimize your dietary strategy.

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