diet food
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Price range
Great$5.26–$56.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great8.1%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Avg price
Good$14.06avg listing price — sweet spot $15–$100
Growth
Okay+16.5%90-day search growth — must beat 0% to launch
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Market size
Okay$114K$114K/yr · 100K searches
Review moat
Bad4,964.83avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, diet food is a $114K/yr Amazon United States market (100K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 49/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
diet food market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- $141K–$176K
- units × avg price
- Conversion rate
- 8.1%
- Avg BSR
- #84
- Page quality
- 0%
- Prime
- 89%
- Sponsored
- 72%
- Out of stock
- 3.9%
- Avg brand age
- 77 months
- Avg seller age
- 127 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
3 falling
Sellers
79
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
0%
- Protein One54%
- Fiber One39%
- ONE7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +16.5% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 2.0×
Top diet food search terms
- protein one bars32K/yr
- fiber one protein bars31K/yr
- protein one17K/yr
- protein one bars 90 calorie14K/yr
- fiber one protein4K/yr
- protein one bar2K/yr
- protein one peanut butter chocolate bars1K/yr
- protein one bars 90 calorie peanut butter chocolate82/yr
Top diet food products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Protein One Peanut Butter Chocolate Protein Bars GLP-1 Friendly 5 Ct 4.8 oz
Protein One$6.533.6★1,811 rev
Protein One Strawberries and Cream Protein Bars GLP-1 Friendly 5 Ct 4.8 oz
Protein One$5.573.6★2,355 rev
Fiber One Chewy Protein Bars Caramel Nut Protein Snacks 1.17 oz 5 ct
Fiber One$5.314.5★8,229 rev
Protein One 90 Calorie Protein Bars Chocolate Chip Keto Friendly 5 Ct 4.8 oz (Pack of 12)
Protein One$56.604.1★1,146 rev
Fiber One 80 Calorie Chewy Bars Chocolate Peanut Butter Snack Bars Value Pack 10 Ct 8.2 oz
Fiber One$8.434.2★1,952 rev
Newest
by launch date
ONE Protein Bars NEW Hersheys Double Chocolate Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Pack)
ONE$23.70585 rev
ONE Protein Bars Reeses Peanut Butter Lovers Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Count)
ONE$23.722,836 rev
Fiber One 70 Calorie Brownies Chocolate Chip Cookie Snack Bars 2g Sugar Value Pack 12 Ct 10.6 oz
Fiber One$5.674,248 rev
Fiber One 70 Calorie Soft Baked Bars Cinnamon Coffee Cake Mega Pack 18 Ct 16 oz
Fiber One$8.608,522 rev
Protein One 90 Calorie Protein Bars Chocolate Chip Keto Friendly 5 Ct 4.8 oz (Pack of 12)
Protein One$56.601,146 rev
Trending
90-day click momentumONE Protein Bars NEW Hersheys Double Chocolate Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Pack)
ONE$23.704.3★
Protein One 90 Calorie Protein Bars Chocolate Chip Keto Friendly 5 Ct 4.8 oz (Pack of 12)
Protein One$56.604.1★
Protein One Strawberries and Cream Protein Bars GLP-1 Friendly 5 Ct 4.8 oz
Protein One$5.573.6★
Protein One Peanut Butter Chocolate Protein Bars GLP-1 Friendly 5 Ct 4.8 oz
Protein One$6.533.6★
Fiber One Chewy Bars Oats and Chocolate Fiber Snacks Value Pack 10 Ct 14.1 oz
Fiber One$6.144.7★
What buyers say about diet food
What buyers praise and complain about, mined from review topics.What buyers love
“Delicious Treat”
“Good protein”
“The flavor variety is excellent”
“Low calorie”
“They're well made”
“Great little sweet treat”
“GREAT PRICE”
“Great texture”
“Fresh arrived fast”
“Nice and soft and we can taste the cinnamon”
What buyers complain about
“has an odd after taste”
“Certain things just don't make sense as a part of a healthy diet”
“And the taste, tastes artificial”
“Not chewable”
“Kinda Pricey”
“Melted Mess”
“its a really weird texture”
“Bolts are too short”
“To sweet”
“Not as pictured”
Top return reasons
Common questions
- Is diet food profitable to sell on Amazon United States?
- The niche generates $114K/yr across 18 tracked products. 90-day search growth is +16.5%. Flapen's verdict: Skip it (49/100).
- How competitive is the diet food niche?
- 3 brands and 79 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in diet food?
- Top complaints mined from reviews: Taste-Overall, Nutritional Content, Flavor. The return rate is 0.0%.
- When does demand for diet food peak?
- Demand is steady year-round — the busiest month runs 2.0× the quietest.
- What does it cost to enter the diet food niche?
- Listings span $5.26–$56.60; the average listing price is $14.06 (sweet spot $15–$100). The average incumbent carries 4,965 reviews — the moat a new listing must climb.