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Modifying salt taste perception, preference, and intake in individuals with smell loss

Award Number: F32DC020658
ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS
PERIOD OF PERFORMANCE START DATE: 12/01/2022
PERIOD OF PERFORMANCE END DATE: 08/09/2024

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Modifying salt taste perception, preference, and intake in individuals with smell loss - PROJECT SUMMARY Individuals who suffer from a diminished or lost sense of smell (Hyposmia/Anosmia) consistently report food to be bland and less palatable, resulting in a reduction in diet quality and quality of life. Despite these reports, we have limited knowledge about how smell loss influences food perception and preferences from experimental studies. As a result, there is minimal dietary guidance for H/A individuals. H/A individuals self-report preferring saltier foods and increasing their salt intake to compensate for the loss of smell-mediated food flavors. However, salt consumption already exceeds recommended levels in 90% of the population and contributes to cardiovascular disease; further increasing sodium intake can have broad, negative health implications. Documenting salt preferences and intake using validated measures will help guide future research on improving food liking and diet quality in H/A individuals. This proposal will (1) assess differences in salt taste preferences, salt intake, and appetite between H/A individuals and those with a normal sense of smell (normosmic) and (2) determine the acute effects of capsaicin on flavor, liking, and salt taste intensity in H/A compared with normosmic individuals. Aim 1 will measure (a) salt taste intensity using general Labeled Magnitude Scales, (b) liking using Labeled Hedonic Scales, (c) salt taste preferences using the Monell Forced- Choice Paired Comparison Tracking Procedure, (d) sodium intake via 24-hour urine samples, and (e) appetite using the Power of Food Scale in H/A individuals with long-term smell loss (>12 weeks) compared with normosmic individuals. These data will help guide future strategies to improve diet quality in H/A individuals. Aim 2 will test whether capsaicin can boost salt taste intensity in this population, thus establishing a sensory strategy to avoid excess salt for flavor by using the same scales to measure salt intensity, overall flavor, and liking. This will provide a sensory strategy to reduce salt intake and improve diet quality specifically for H/A individuals, filling this critical information gap. This research aims to understand food preferences and perception related to smell loss and reduce salt intake, which has implications for diet quality and risk for cardiovascular disease, which aligns with priority areas 2 and 4 for the NIDCD. The concurrent training plan in psychophysics and sensory measurement will complement my training in nutrition science to support my long- term research goal of identifying sensory strategies to improve diet quality and reduce the risk for chronic diseases.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = -$19,545 )
2025	2024	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	000	2	10/17/2024	NON-COMPETING CONTINUATION	-$19,081
2025	2024	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	001	2	6/25/2025	NON-COMPETING CONTINUATION	-$464
														Subtotal = -$19,545

Issue Date FY: 2024 ( Subtotal = $74,284 )
2024	2024	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	000	2	10/23/2023	NON-COMPETING CONTINUATION	$69,250
2024	2024	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	001	2	4/25/2024	NON-COMPETING CONTINUATION	$5,034
														Subtotal = $74,284

Issue Date FY: 2023 ( Subtotal = $0 )
2023	2022	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	001	1	11/29/2022	NEW	$0
2023	2022	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	000	1	11/29/2022	NEW	$0
														Subtotal = $0

Issue Date FY: 2022 ( Subtotal = $67,174 )
2022	2022	MONELL CHEMICAL SENSES CENTER	3500 MARKET ST	PHILADELPHIA	PA	19104	PHILADELPHIA	USA	Research Related to Deafness and Communication Disorders	000	1	8/18/2022	NEW	$67,174
														Subtotal = $67,174

Grand Total All Awards = $121,913

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Modifying salt taste perception, preference, and intake in individuals with smell loss

Award Number: F32DC020658

ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS

PERIOD OF PERFORMANCE START DATE: 12/01/2022

PERIOD OF PERFORMANCE END DATE: 08/09/2024

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